| /* |
| An implementation of Text I/O as defined by PEP 3116 - "New I/O" |
| |
| Classes defined here: TextIOBase, IncrementalNewlineDecoder, TextIOWrapper. |
| |
| Written by Amaury Forgeot d'Arc and Antoine Pitrou |
| */ |
| |
| #define PY_SSIZE_T_CLEAN |
| #include "Python.h" |
| #include "structmember.h" |
| #include "_iomodule.h" |
| |
| /*[clinic input] |
| module _io |
| class _io.IncrementalNewlineDecoder "nldecoder_object *" "&PyIncrementalNewlineDecoder_Type" |
| class _io.TextIOWrapper "textio *" "&TextIOWrapper_TYpe" |
| [clinic start generated code]*/ |
| /*[clinic end generated code: output=da39a3ee5e6b4b0d input=2097a4fc85670c26]*/ |
| |
| /*[python input] |
| class io_ssize_t_converter(CConverter): |
| type = 'Py_ssize_t' |
| converter = '_PyIO_ConvertSsize_t' |
| [python start generated code]*/ |
| /*[python end generated code: output=da39a3ee5e6b4b0d input=d0a811d3cbfd1b33]*/ |
| |
| _Py_IDENTIFIER(close); |
| _Py_IDENTIFIER(_dealloc_warn); |
| _Py_IDENTIFIER(decode); |
| _Py_IDENTIFIER(fileno); |
| _Py_IDENTIFIER(flush); |
| _Py_IDENTIFIER(getpreferredencoding); |
| _Py_IDENTIFIER(isatty); |
| _Py_IDENTIFIER(mode); |
| _Py_IDENTIFIER(name); |
| _Py_IDENTIFIER(raw); |
| _Py_IDENTIFIER(read); |
| _Py_IDENTIFIER(read1); |
| _Py_IDENTIFIER(readable); |
| _Py_IDENTIFIER(replace); |
| _Py_IDENTIFIER(reset); |
| _Py_IDENTIFIER(seek); |
| _Py_IDENTIFIER(seekable); |
| _Py_IDENTIFIER(setstate); |
| _Py_IDENTIFIER(tell); |
| _Py_IDENTIFIER(writable); |
| |
| /* TextIOBase */ |
| |
| PyDoc_STRVAR(textiobase_doc, |
| "Base class for text I/O.\n" |
| "\n" |
| "This class provides a character and line based interface to stream\n" |
| "I/O. There is no readinto method because Python's character strings\n" |
| "are immutable. There is no public constructor.\n" |
| ); |
| |
| static PyObject * |
| _unsupported(const char *message) |
| { |
| _PyIO_State *state = IO_STATE(); |
| if (state != NULL) |
| PyErr_SetString(state->unsupported_operation, message); |
| return NULL; |
| } |
| |
| PyDoc_STRVAR(textiobase_detach_doc, |
| "Separate the underlying buffer from the TextIOBase and return it.\n" |
| "\n" |
| "After the underlying buffer has been detached, the TextIO is in an\n" |
| "unusable state.\n" |
| ); |
| |
| static PyObject * |
| textiobase_detach(PyObject *self) |
| { |
| return _unsupported("detach"); |
| } |
| |
| PyDoc_STRVAR(textiobase_read_doc, |
| "Read at most n characters from stream.\n" |
| "\n" |
| "Read from underlying buffer until we have n characters or we hit EOF.\n" |
| "If n is negative or omitted, read until EOF.\n" |
| ); |
| |
| static PyObject * |
| textiobase_read(PyObject *self, PyObject *args) |
| { |
| return _unsupported("read"); |
| } |
| |
| PyDoc_STRVAR(textiobase_readline_doc, |
| "Read until newline or EOF.\n" |
| "\n" |
| "Returns an empty string if EOF is hit immediately.\n" |
| ); |
| |
| static PyObject * |
| textiobase_readline(PyObject *self, PyObject *args) |
| { |
| return _unsupported("readline"); |
| } |
| |
| PyDoc_STRVAR(textiobase_write_doc, |
| "Write string to stream.\n" |
| "Returns the number of characters written (which is always equal to\n" |
| "the length of the string).\n" |
| ); |
| |
| static PyObject * |
| textiobase_write(PyObject *self, PyObject *args) |
| { |
| return _unsupported("write"); |
| } |
| |
| PyDoc_STRVAR(textiobase_encoding_doc, |
| "Encoding of the text stream.\n" |
| "\n" |
| "Subclasses should override.\n" |
| ); |
| |
| static PyObject * |
| textiobase_encoding_get(PyObject *self, void *context) |
| { |
| Py_RETURN_NONE; |
| } |
| |
| PyDoc_STRVAR(textiobase_newlines_doc, |
| "Line endings translated so far.\n" |
| "\n" |
| "Only line endings translated during reading are considered.\n" |
| "\n" |
| "Subclasses should override.\n" |
| ); |
| |
| static PyObject * |
| textiobase_newlines_get(PyObject *self, void *context) |
| { |
| Py_RETURN_NONE; |
| } |
| |
| PyDoc_STRVAR(textiobase_errors_doc, |
| "The error setting of the decoder or encoder.\n" |
| "\n" |
| "Subclasses should override.\n" |
| ); |
| |
| static PyObject * |
| textiobase_errors_get(PyObject *self, void *context) |
| { |
| Py_RETURN_NONE; |
| } |
| |
| |
| static PyMethodDef textiobase_methods[] = { |
| {"detach", (PyCFunction)textiobase_detach, METH_NOARGS, textiobase_detach_doc}, |
| {"read", textiobase_read, METH_VARARGS, textiobase_read_doc}, |
| {"readline", textiobase_readline, METH_VARARGS, textiobase_readline_doc}, |
| {"write", textiobase_write, METH_VARARGS, textiobase_write_doc}, |
| {NULL, NULL} |
| }; |
| |
| static PyGetSetDef textiobase_getset[] = { |
| {"encoding", (getter)textiobase_encoding_get, NULL, textiobase_encoding_doc}, |
| {"newlines", (getter)textiobase_newlines_get, NULL, textiobase_newlines_doc}, |
| {"errors", (getter)textiobase_errors_get, NULL, textiobase_errors_doc}, |
| {NULL} |
| }; |
| |
| PyTypeObject PyTextIOBase_Type = { |
| PyVarObject_HEAD_INIT(NULL, 0) |
| "_io._TextIOBase", /*tp_name*/ |
| 0, /*tp_basicsize*/ |
| 0, /*tp_itemsize*/ |
| 0, /*tp_dealloc*/ |
| 0, /*tp_print*/ |
| 0, /*tp_getattr*/ |
| 0, /*tp_setattr*/ |
| 0, /*tp_compare */ |
| 0, /*tp_repr*/ |
| 0, /*tp_as_number*/ |
| 0, /*tp_as_sequence*/ |
| 0, /*tp_as_mapping*/ |
| 0, /*tp_hash */ |
| 0, /*tp_call*/ |
| 0, /*tp_str*/ |
| 0, /*tp_getattro*/ |
| 0, /*tp_setattro*/ |
| 0, /*tp_as_buffer*/ |
| Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
| | Py_TPFLAGS_HAVE_FINALIZE, /*tp_flags*/ |
| textiobase_doc, /* tp_doc */ |
| 0, /* tp_traverse */ |
| 0, /* tp_clear */ |
| 0, /* tp_richcompare */ |
| 0, /* tp_weaklistoffset */ |
| 0, /* tp_iter */ |
| 0, /* tp_iternext */ |
| textiobase_methods, /* tp_methods */ |
| 0, /* tp_members */ |
| textiobase_getset, /* tp_getset */ |
| &PyIOBase_Type, /* tp_base */ |
| 0, /* tp_dict */ |
| 0, /* tp_descr_get */ |
| 0, /* tp_descr_set */ |
| 0, /* tp_dictoffset */ |
| 0, /* tp_init */ |
| 0, /* tp_alloc */ |
| 0, /* tp_new */ |
| 0, /* tp_free */ |
| 0, /* tp_is_gc */ |
| 0, /* tp_bases */ |
| 0, /* tp_mro */ |
| 0, /* tp_cache */ |
| 0, /* tp_subclasses */ |
| 0, /* tp_weaklist */ |
| 0, /* tp_del */ |
| 0, /* tp_version_tag */ |
| 0, /* tp_finalize */ |
| }; |
| |
| |
| /* IncrementalNewlineDecoder */ |
| |
| typedef struct { |
| PyObject_HEAD |
| PyObject *decoder; |
| PyObject *errors; |
| unsigned int pendingcr: 1; |
| unsigned int translate: 1; |
| unsigned int seennl: 3; |
| } nldecoder_object; |
| |
| /*[clinic input] |
| _io.IncrementalNewlineDecoder.__init__ |
| decoder: object |
| translate: int |
| errors: object(c_default="NULL") = "strict" |
| |
| Codec used when reading a file in universal newlines mode. |
| |
| It wraps another incremental decoder, translating \r\n and \r into \n. |
| It also records the types of newlines encountered. When used with |
| translate=False, it ensures that the newline sequence is returned in |
| one piece. When used with decoder=None, it expects unicode strings as |
| decode input and translates newlines without first invoking an external |
| decoder. |
| [clinic start generated code]*/ |
| |
| static int |
| _io_IncrementalNewlineDecoder___init___impl(nldecoder_object *self, |
| PyObject *decoder, int translate, |
| PyObject *errors) |
| /*[clinic end generated code: output=fbd04d443e764ec2 input=89db6b19c6b126bf]*/ |
| { |
| self->decoder = decoder; |
| Py_INCREF(decoder); |
| |
| if (errors == NULL) { |
| self->errors = PyUnicode_FromString("strict"); |
| if (self->errors == NULL) |
| return -1; |
| } |
| else { |
| Py_INCREF(errors); |
| self->errors = errors; |
| } |
| |
| self->translate = translate; |
| self->seennl = 0; |
| self->pendingcr = 0; |
| |
| return 0; |
| } |
| |
| static void |
| incrementalnewlinedecoder_dealloc(nldecoder_object *self) |
| { |
| Py_CLEAR(self->decoder); |
| Py_CLEAR(self->errors); |
| Py_TYPE(self)->tp_free((PyObject *)self); |
| } |
| |
| static int |
| check_decoded(PyObject *decoded) |
| { |
| if (decoded == NULL) |
| return -1; |
| if (!PyUnicode_Check(decoded)) { |
| PyErr_Format(PyExc_TypeError, |
| "decoder should return a string result, not '%.200s'", |
| Py_TYPE(decoded)->tp_name); |
| Py_DECREF(decoded); |
| return -1; |
| } |
| if (PyUnicode_READY(decoded) < 0) { |
| Py_DECREF(decoded); |
| return -1; |
| } |
| return 0; |
| } |
| |
| #define SEEN_CR 1 |
| #define SEEN_LF 2 |
| #define SEEN_CRLF 4 |
| #define SEEN_ALL (SEEN_CR | SEEN_LF | SEEN_CRLF) |
| |
| PyObject * |
| _PyIncrementalNewlineDecoder_decode(PyObject *myself, |
| PyObject *input, int final) |
| { |
| PyObject *output; |
| Py_ssize_t output_len; |
| nldecoder_object *self = (nldecoder_object *) myself; |
| |
| if (self->decoder == NULL) { |
| PyErr_SetString(PyExc_ValueError, |
| "IncrementalNewlineDecoder.__init__ not called"); |
| return NULL; |
| } |
| |
| /* decode input (with the eventual \r from a previous pass) */ |
| if (self->decoder != Py_None) { |
| output = PyObject_CallMethodObjArgs(self->decoder, |
| _PyIO_str_decode, input, final ? Py_True : Py_False, NULL); |
| } |
| else { |
| output = input; |
| Py_INCREF(output); |
| } |
| |
| if (check_decoded(output) < 0) |
| return NULL; |
| |
| output_len = PyUnicode_GET_LENGTH(output); |
| if (self->pendingcr && (final || output_len > 0)) { |
| /* Prefix output with CR */ |
| int kind; |
| PyObject *modified; |
| char *out; |
| |
| modified = PyUnicode_New(output_len + 1, |
| PyUnicode_MAX_CHAR_VALUE(output)); |
| if (modified == NULL) |
| goto error; |
| kind = PyUnicode_KIND(modified); |
| out = PyUnicode_DATA(modified); |
| PyUnicode_WRITE(kind, PyUnicode_DATA(modified), 0, '\r'); |
| memcpy(out + kind, PyUnicode_DATA(output), kind * output_len); |
| Py_DECREF(output); |
| output = modified; /* output remains ready */ |
| self->pendingcr = 0; |
| output_len++; |
| } |
| |
| /* retain last \r even when not translating data: |
| * then readline() is sure to get \r\n in one pass |
| */ |
| if (!final) { |
| if (output_len > 0 |
| && PyUnicode_READ_CHAR(output, output_len - 1) == '\r') |
| { |
| PyObject *modified = PyUnicode_Substring(output, 0, output_len -1); |
| if (modified == NULL) |
| goto error; |
| Py_DECREF(output); |
| output = modified; |
| self->pendingcr = 1; |
| } |
| } |
| |
| /* Record which newlines are read and do newline translation if desired, |
| all in one pass. */ |
| { |
| void *in_str; |
| Py_ssize_t len; |
| int seennl = self->seennl; |
| int only_lf = 0; |
| int kind; |
| |
| in_str = PyUnicode_DATA(output); |
| len = PyUnicode_GET_LENGTH(output); |
| kind = PyUnicode_KIND(output); |
| |
| if (len == 0) |
| return output; |
| |
| /* If, up to now, newlines are consistently \n, do a quick check |
| for the \r *byte* with the libc's optimized memchr. |
| */ |
| if (seennl == SEEN_LF || seennl == 0) { |
| only_lf = (memchr(in_str, '\r', kind * len) == NULL); |
| } |
| |
| if (only_lf) { |
| /* If not already seen, quick scan for a possible "\n" character. |
| (there's nothing else to be done, even when in translation mode) |
| */ |
| if (seennl == 0 && |
| memchr(in_str, '\n', kind * len) != NULL) { |
| if (kind == PyUnicode_1BYTE_KIND) |
| seennl |= SEEN_LF; |
| else { |
| Py_ssize_t i = 0; |
| for (;;) { |
| Py_UCS4 c; |
| /* Fast loop for non-control characters */ |
| while (PyUnicode_READ(kind, in_str, i) > '\n') |
| i++; |
| c = PyUnicode_READ(kind, in_str, i++); |
| if (c == '\n') { |
| seennl |= SEEN_LF; |
| break; |
| } |
| if (i >= len) |
| break; |
| } |
| } |
| } |
| /* Finished: we have scanned for newlines, and none of them |
| need translating */ |
| } |
| else if (!self->translate) { |
| Py_ssize_t i = 0; |
| /* We have already seen all newline types, no need to scan again */ |
| if (seennl == SEEN_ALL) |
| goto endscan; |
| for (;;) { |
| Py_UCS4 c; |
| /* Fast loop for non-control characters */ |
| while (PyUnicode_READ(kind, in_str, i) > '\r') |
| i++; |
| c = PyUnicode_READ(kind, in_str, i++); |
| if (c == '\n') |
| seennl |= SEEN_LF; |
| else if (c == '\r') { |
| if (PyUnicode_READ(kind, in_str, i) == '\n') { |
| seennl |= SEEN_CRLF; |
| i++; |
| } |
| else |
| seennl |= SEEN_CR; |
| } |
| if (i >= len) |
| break; |
| if (seennl == SEEN_ALL) |
| break; |
| } |
| endscan: |
| ; |
| } |
| else { |
| void *translated; |
| int kind = PyUnicode_KIND(output); |
| void *in_str = PyUnicode_DATA(output); |
| Py_ssize_t in, out; |
| /* XXX: Previous in-place translation here is disabled as |
| resizing is not possible anymore */ |
| /* We could try to optimize this so that we only do a copy |
| when there is something to translate. On the other hand, |
| we already know there is a \r byte, so chances are high |
| that something needs to be done. */ |
| translated = PyMem_Malloc(kind * len); |
| if (translated == NULL) { |
| PyErr_NoMemory(); |
| goto error; |
| } |
| in = out = 0; |
| for (;;) { |
| Py_UCS4 c; |
| /* Fast loop for non-control characters */ |
| while ((c = PyUnicode_READ(kind, in_str, in++)) > '\r') |
| PyUnicode_WRITE(kind, translated, out++, c); |
| if (c == '\n') { |
| PyUnicode_WRITE(kind, translated, out++, c); |
| seennl |= SEEN_LF; |
| continue; |
| } |
| if (c == '\r') { |
| if (PyUnicode_READ(kind, in_str, in) == '\n') { |
| in++; |
| seennl |= SEEN_CRLF; |
| } |
| else |
| seennl |= SEEN_CR; |
| PyUnicode_WRITE(kind, translated, out++, '\n'); |
| continue; |
| } |
| if (in > len) |
| break; |
| PyUnicode_WRITE(kind, translated, out++, c); |
| } |
| Py_DECREF(output); |
| output = PyUnicode_FromKindAndData(kind, translated, out); |
| PyMem_Free(translated); |
| if (!output) |
| return NULL; |
| } |
| self->seennl |= seennl; |
| } |
| |
| return output; |
| |
| error: |
| Py_DECREF(output); |
| return NULL; |
| } |
| |
| /*[clinic input] |
| _io.IncrementalNewlineDecoder.decode |
| input: object |
| final: int(c_default="0") = False |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_IncrementalNewlineDecoder_decode_impl(nldecoder_object *self, |
| PyObject *input, int final) |
| /*[clinic end generated code: output=0d486755bb37a66e input=d65677385bfd6827]*/ |
| { |
| return _PyIncrementalNewlineDecoder_decode((PyObject *) self, input, final); |
| } |
| |
| /*[clinic input] |
| _io.IncrementalNewlineDecoder.getstate |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_IncrementalNewlineDecoder_getstate_impl(nldecoder_object *self) |
| /*[clinic end generated code: output=f0d2c9c136f4e0d0 input=f8ff101825e32e7f]*/ |
| { |
| PyObject *buffer; |
| unsigned PY_LONG_LONG flag; |
| |
| if (self->decoder != Py_None) { |
| PyObject *state = PyObject_CallMethodObjArgs(self->decoder, |
| _PyIO_str_getstate, NULL); |
| if (state == NULL) |
| return NULL; |
| if (!PyArg_ParseTuple(state, "OK", &buffer, &flag)) { |
| Py_DECREF(state); |
| return NULL; |
| } |
| Py_INCREF(buffer); |
| Py_DECREF(state); |
| } |
| else { |
| buffer = PyBytes_FromString(""); |
| flag = 0; |
| } |
| flag <<= 1; |
| if (self->pendingcr) |
| flag |= 1; |
| return Py_BuildValue("NK", buffer, flag); |
| } |
| |
| /*[clinic input] |
| _io.IncrementalNewlineDecoder.setstate |
| state: object |
| / |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_IncrementalNewlineDecoder_setstate(nldecoder_object *self, |
| PyObject *state) |
| /*[clinic end generated code: output=c10c622508b576cb input=c53fb505a76dbbe2]*/ |
| { |
| PyObject *buffer; |
| unsigned PY_LONG_LONG flag; |
| |
| if (!PyArg_ParseTuple(state, "OK", &buffer, &flag)) |
| return NULL; |
| |
| self->pendingcr = (int) (flag & 1); |
| flag >>= 1; |
| |
| if (self->decoder != Py_None) |
| return _PyObject_CallMethodId(self->decoder, |
| &PyId_setstate, "((OK))", buffer, flag); |
| else |
| Py_RETURN_NONE; |
| } |
| |
| /*[clinic input] |
| _io.IncrementalNewlineDecoder.reset |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_IncrementalNewlineDecoder_reset_impl(nldecoder_object *self) |
| /*[clinic end generated code: output=32fa40c7462aa8ff input=728678ddaea776df]*/ |
| { |
| self->seennl = 0; |
| self->pendingcr = 0; |
| if (self->decoder != Py_None) |
| return PyObject_CallMethodObjArgs(self->decoder, _PyIO_str_reset, NULL); |
| else |
| Py_RETURN_NONE; |
| } |
| |
| static PyObject * |
| incrementalnewlinedecoder_newlines_get(nldecoder_object *self, void *context) |
| { |
| switch (self->seennl) { |
| case SEEN_CR: |
| return PyUnicode_FromString("\r"); |
| case SEEN_LF: |
| return PyUnicode_FromString("\n"); |
| case SEEN_CRLF: |
| return PyUnicode_FromString("\r\n"); |
| case SEEN_CR | SEEN_LF: |
| return Py_BuildValue("ss", "\r", "\n"); |
| case SEEN_CR | SEEN_CRLF: |
| return Py_BuildValue("ss", "\r", "\r\n"); |
| case SEEN_LF | SEEN_CRLF: |
| return Py_BuildValue("ss", "\n", "\r\n"); |
| case SEEN_CR | SEEN_LF | SEEN_CRLF: |
| return Py_BuildValue("sss", "\r", "\n", "\r\n"); |
| default: |
| Py_RETURN_NONE; |
| } |
| |
| } |
| |
| /* TextIOWrapper */ |
| |
| typedef PyObject * |
| (*encodefunc_t)(PyObject *, PyObject *); |
| |
| typedef struct |
| { |
| PyObject_HEAD |
| int ok; /* initialized? */ |
| int detached; |
| Py_ssize_t chunk_size; |
| PyObject *buffer; |
| PyObject *encoding; |
| PyObject *encoder; |
| PyObject *decoder; |
| PyObject *readnl; |
| PyObject *errors; |
| const char *writenl; /* utf-8 encoded, NULL stands for \n */ |
| char line_buffering; |
| char write_through; |
| char readuniversal; |
| char readtranslate; |
| char writetranslate; |
| char seekable; |
| char has_read1; |
| char telling; |
| char finalizing; |
| /* Specialized encoding func (see below) */ |
| encodefunc_t encodefunc; |
| /* Whether or not it's the start of the stream */ |
| char encoding_start_of_stream; |
| |
| /* Reads and writes are internally buffered in order to speed things up. |
| However, any read will first flush the write buffer if itsn't empty. |
| |
| Please also note that text to be written is first encoded before being |
| buffered. This is necessary so that encoding errors are immediately |
| reported to the caller, but it unfortunately means that the |
| IncrementalEncoder (whose encode() method is always written in Python) |
| becomes a bottleneck for small writes. |
| */ |
| PyObject *decoded_chars; /* buffer for text returned from decoder */ |
| Py_ssize_t decoded_chars_used; /* offset into _decoded_chars for read() */ |
| PyObject *pending_bytes; /* list of bytes objects waiting to be |
| written, or NULL */ |
| Py_ssize_t pending_bytes_count; |
| |
| /* snapshot is either None, or a tuple (dec_flags, next_input) where |
| * dec_flags is the second (integer) item of the decoder state and |
| * next_input is the chunk of input bytes that comes next after the |
| * snapshot point. We use this to reconstruct decoder states in tell(). |
| */ |
| PyObject *snapshot; |
| /* Bytes-to-characters ratio for the current chunk. Serves as input for |
| the heuristic in tell(). */ |
| double b2cratio; |
| |
| /* Cache raw object if it's a FileIO object */ |
| PyObject *raw; |
| |
| PyObject *weakreflist; |
| PyObject *dict; |
| } textio; |
| |
| /* A couple of specialized cases in order to bypass the slow incremental |
| encoding methods for the most popular encodings. */ |
| |
| static PyObject * |
| ascii_encode(textio *self, PyObject *text) |
| { |
| return _PyUnicode_AsASCIIString(text, PyBytes_AS_STRING(self->errors)); |
| } |
| |
| static PyObject * |
| utf16be_encode(textio *self, PyObject *text) |
| { |
| return _PyUnicode_EncodeUTF16(text, |
| PyBytes_AS_STRING(self->errors), 1); |
| } |
| |
| static PyObject * |
| utf16le_encode(textio *self, PyObject *text) |
| { |
| return _PyUnicode_EncodeUTF16(text, |
| PyBytes_AS_STRING(self->errors), -1); |
| } |
| |
| static PyObject * |
| utf16_encode(textio *self, PyObject *text) |
| { |
| if (!self->encoding_start_of_stream) { |
| /* Skip the BOM and use native byte ordering */ |
| #if PY_BIG_ENDIAN |
| return utf16be_encode(self, text); |
| #else |
| return utf16le_encode(self, text); |
| #endif |
| } |
| return _PyUnicode_EncodeUTF16(text, |
| PyBytes_AS_STRING(self->errors), 0); |
| } |
| |
| static PyObject * |
| utf32be_encode(textio *self, PyObject *text) |
| { |
| return _PyUnicode_EncodeUTF32(text, |
| PyBytes_AS_STRING(self->errors), 1); |
| } |
| |
| static PyObject * |
| utf32le_encode(textio *self, PyObject *text) |
| { |
| return _PyUnicode_EncodeUTF32(text, |
| PyBytes_AS_STRING(self->errors), -1); |
| } |
| |
| static PyObject * |
| utf32_encode(textio *self, PyObject *text) |
| { |
| if (!self->encoding_start_of_stream) { |
| /* Skip the BOM and use native byte ordering */ |
| #if PY_BIG_ENDIAN |
| return utf32be_encode(self, text); |
| #else |
| return utf32le_encode(self, text); |
| #endif |
| } |
| return _PyUnicode_EncodeUTF32(text, |
| PyBytes_AS_STRING(self->errors), 0); |
| } |
| |
| static PyObject * |
| utf8_encode(textio *self, PyObject *text) |
| { |
| return _PyUnicode_AsUTF8String(text, PyBytes_AS_STRING(self->errors)); |
| } |
| |
| static PyObject * |
| latin1_encode(textio *self, PyObject *text) |
| { |
| return _PyUnicode_AsLatin1String(text, PyBytes_AS_STRING(self->errors)); |
| } |
| |
| /* Map normalized encoding names onto the specialized encoding funcs */ |
| |
| typedef struct { |
| const char *name; |
| encodefunc_t encodefunc; |
| } encodefuncentry; |
| |
| static const encodefuncentry encodefuncs[] = { |
| {"ascii", (encodefunc_t) ascii_encode}, |
| {"iso8859-1", (encodefunc_t) latin1_encode}, |
| {"utf-8", (encodefunc_t) utf8_encode}, |
| {"utf-16-be", (encodefunc_t) utf16be_encode}, |
| {"utf-16-le", (encodefunc_t) utf16le_encode}, |
| {"utf-16", (encodefunc_t) utf16_encode}, |
| {"utf-32-be", (encodefunc_t) utf32be_encode}, |
| {"utf-32-le", (encodefunc_t) utf32le_encode}, |
| {"utf-32", (encodefunc_t) utf32_encode}, |
| {NULL, NULL} |
| }; |
| |
| |
| /*[clinic input] |
| _io.TextIOWrapper.__init__ |
| buffer: object |
| encoding: str(accept={str, NoneType}) = NULL |
| errors: str(accept={str, NoneType}) = NULL |
| newline: str(accept={str, NoneType}) = NULL |
| line_buffering: int(c_default="0") = False |
| write_through: int(c_default="0") = False |
| |
| Character and line based layer over a BufferedIOBase object, buffer. |
| |
| encoding gives the name of the encoding that the stream will be |
| decoded or encoded with. It defaults to locale.getpreferredencoding(False). |
| |
| errors determines the strictness of encoding and decoding (see |
| help(codecs.Codec) or the documentation for codecs.register) and |
| defaults to "strict". |
| |
| newline controls how line endings are handled. It can be None, '', |
| '\n', '\r', and '\r\n'. It works as follows: |
| |
| * On input, if newline is None, universal newlines mode is |
| enabled. Lines in the input can end in '\n', '\r', or '\r\n', and |
| these are translated into '\n' before being returned to the |
| caller. If it is '', universal newline mode is enabled, but line |
| endings are returned to the caller untranslated. If it has any of |
| the other legal values, input lines are only terminated by the given |
| string, and the line ending is returned to the caller untranslated. |
| |
| * On output, if newline is None, any '\n' characters written are |
| translated to the system default line separator, os.linesep. If |
| newline is '' or '\n', no translation takes place. If newline is any |
| of the other legal values, any '\n' characters written are translated |
| to the given string. |
| |
| If line_buffering is True, a call to flush is implied when a call to |
| write contains a newline character. |
| [clinic start generated code]*/ |
| |
| static int |
| _io_TextIOWrapper___init___impl(textio *self, PyObject *buffer, |
| const char *encoding, const char *errors, |
| const char *newline, int line_buffering, |
| int write_through) |
| /*[clinic end generated code: output=56a83402ce2a8381 input=3126cb3101a2c99b]*/ |
| { |
| PyObject *raw, *codec_info = NULL; |
| _PyIO_State *state = NULL; |
| PyObject *res; |
| int r; |
| |
| self->ok = 0; |
| self->detached = 0; |
| |
| if (newline && newline[0] != '\0' |
| && !(newline[0] == '\n' && newline[1] == '\0') |
| && !(newline[0] == '\r' && newline[1] == '\0') |
| && !(newline[0] == '\r' && newline[1] == '\n' && newline[2] == '\0')) { |
| PyErr_Format(PyExc_ValueError, |
| "illegal newline value: %s", newline); |
| return -1; |
| } |
| |
| Py_CLEAR(self->buffer); |
| Py_CLEAR(self->encoding); |
| Py_CLEAR(self->encoder); |
| Py_CLEAR(self->decoder); |
| Py_CLEAR(self->readnl); |
| Py_CLEAR(self->decoded_chars); |
| Py_CLEAR(self->pending_bytes); |
| Py_CLEAR(self->snapshot); |
| Py_CLEAR(self->errors); |
| Py_CLEAR(self->raw); |
| self->decoded_chars_used = 0; |
| self->pending_bytes_count = 0; |
| self->encodefunc = NULL; |
| self->b2cratio = 0.0; |
| |
| if (encoding == NULL) { |
| /* Try os.device_encoding(fileno) */ |
| PyObject *fileno; |
| state = IO_STATE(); |
| if (state == NULL) |
| goto error; |
| fileno = _PyObject_CallMethodId(buffer, &PyId_fileno, NULL); |
| /* Ignore only AttributeError and UnsupportedOperation */ |
| if (fileno == NULL) { |
| if (PyErr_ExceptionMatches(PyExc_AttributeError) || |
| PyErr_ExceptionMatches(state->unsupported_operation)) { |
| PyErr_Clear(); |
| } |
| else { |
| goto error; |
| } |
| } |
| else { |
| int fd = _PyLong_AsInt(fileno); |
| Py_DECREF(fileno); |
| if (fd == -1 && PyErr_Occurred()) { |
| goto error; |
| } |
| |
| self->encoding = _Py_device_encoding(fd); |
| if (self->encoding == NULL) |
| goto error; |
| else if (!PyUnicode_Check(self->encoding)) |
| Py_CLEAR(self->encoding); |
| } |
| } |
| if (encoding == NULL && self->encoding == NULL) { |
| PyObject *locale_module = _PyIO_get_locale_module(state); |
| if (locale_module == NULL) |
| goto catch_ImportError; |
| self->encoding = _PyObject_CallMethodId( |
| locale_module, &PyId_getpreferredencoding, "O", Py_False); |
| Py_DECREF(locale_module); |
| if (self->encoding == NULL) { |
| catch_ImportError: |
| /* |
| Importing locale can raise an ImportError because of |
| _functools, and locale.getpreferredencoding can raise an |
| ImportError if _locale is not available. These will happen |
| during module building. |
| */ |
| if (PyErr_ExceptionMatches(PyExc_ImportError)) { |
| PyErr_Clear(); |
| self->encoding = PyUnicode_FromString("ascii"); |
| } |
| else |
| goto error; |
| } |
| else if (!PyUnicode_Check(self->encoding)) |
| Py_CLEAR(self->encoding); |
| } |
| if (self->encoding != NULL) { |
| encoding = _PyUnicode_AsString(self->encoding); |
| if (encoding == NULL) |
| goto error; |
| } |
| else if (encoding != NULL) { |
| self->encoding = PyUnicode_FromString(encoding); |
| if (self->encoding == NULL) |
| goto error; |
| } |
| else { |
| PyErr_SetString(PyExc_IOError, |
| "could not determine default encoding"); |
| } |
| |
| /* Check we have been asked for a real text encoding */ |
| codec_info = _PyCodec_LookupTextEncoding(encoding, "codecs.open()"); |
| if (codec_info == NULL) { |
| Py_CLEAR(self->encoding); |
| goto error; |
| } |
| |
| /* XXX: Failures beyond this point have the potential to leak elements |
| * of the partially constructed object (like self->encoding) |
| */ |
| |
| if (errors == NULL) |
| errors = "strict"; |
| self->errors = PyBytes_FromString(errors); |
| if (self->errors == NULL) |
| goto error; |
| |
| self->chunk_size = 8192; |
| self->readuniversal = (newline == NULL || newline[0] == '\0'); |
| self->line_buffering = line_buffering; |
| self->write_through = write_through; |
| self->readtranslate = (newline == NULL); |
| if (newline) { |
| self->readnl = PyUnicode_FromString(newline); |
| if (self->readnl == NULL) |
| goto error; |
| } |
| self->writetranslate = (newline == NULL || newline[0] != '\0'); |
| if (!self->readuniversal && self->readnl) { |
| self->writenl = _PyUnicode_AsString(self->readnl); |
| if (self->writenl == NULL) |
| goto error; |
| if (!strcmp(self->writenl, "\n")) |
| self->writenl = NULL; |
| } |
| #ifdef MS_WINDOWS |
| else |
| self->writenl = "\r\n"; |
| #endif |
| |
| /* Build the decoder object */ |
| res = _PyObject_CallMethodId(buffer, &PyId_readable, NULL); |
| if (res == NULL) |
| goto error; |
| r = PyObject_IsTrue(res); |
| Py_DECREF(res); |
| if (r == -1) |
| goto error; |
| if (r == 1) { |
| self->decoder = _PyCodecInfo_GetIncrementalDecoder(codec_info, |
| errors); |
| if (self->decoder == NULL) |
| goto error; |
| |
| if (self->readuniversal) { |
| PyObject *incrementalDecoder = PyObject_CallFunction( |
| (PyObject *)&PyIncrementalNewlineDecoder_Type, |
| "Oi", self->decoder, (int)self->readtranslate); |
| if (incrementalDecoder == NULL) |
| goto error; |
| Py_XSETREF(self->decoder, incrementalDecoder); |
| } |
| } |
| |
| /* Build the encoder object */ |
| res = _PyObject_CallMethodId(buffer, &PyId_writable, NULL); |
| if (res == NULL) |
| goto error; |
| r = PyObject_IsTrue(res); |
| Py_DECREF(res); |
| if (r == -1) |
| goto error; |
| if (r == 1) { |
| self->encoder = _PyCodecInfo_GetIncrementalEncoder(codec_info, |
| errors); |
| if (self->encoder == NULL) |
| goto error; |
| /* Get the normalized named of the codec */ |
| res = _PyObject_GetAttrId(codec_info, &PyId_name); |
| if (res == NULL) { |
| if (PyErr_ExceptionMatches(PyExc_AttributeError)) |
| PyErr_Clear(); |
| else |
| goto error; |
| } |
| else if (PyUnicode_Check(res)) { |
| const encodefuncentry *e = encodefuncs; |
| while (e->name != NULL) { |
| if (!PyUnicode_CompareWithASCIIString(res, e->name)) { |
| self->encodefunc = e->encodefunc; |
| break; |
| } |
| e++; |
| } |
| } |
| Py_XDECREF(res); |
| } |
| |
| /* Finished sorting out the codec details */ |
| Py_CLEAR(codec_info); |
| |
| self->buffer = buffer; |
| Py_INCREF(buffer); |
| |
| if (Py_TYPE(buffer) == &PyBufferedReader_Type || |
| Py_TYPE(buffer) == &PyBufferedWriter_Type || |
| Py_TYPE(buffer) == &PyBufferedRandom_Type) { |
| raw = _PyObject_GetAttrId(buffer, &PyId_raw); |
| /* Cache the raw FileIO object to speed up 'closed' checks */ |
| if (raw == NULL) { |
| if (PyErr_ExceptionMatches(PyExc_AttributeError)) |
| PyErr_Clear(); |
| else |
| goto error; |
| } |
| else if (Py_TYPE(raw) == &PyFileIO_Type) |
| self->raw = raw; |
| else |
| Py_DECREF(raw); |
| } |
| |
| res = _PyObject_CallMethodId(buffer, &PyId_seekable, NULL); |
| if (res == NULL) |
| goto error; |
| r = PyObject_IsTrue(res); |
| Py_DECREF(res); |
| if (r < 0) |
| goto error; |
| self->seekable = self->telling = r; |
| |
| self->has_read1 = _PyObject_HasAttrId(buffer, &PyId_read1); |
| |
| self->encoding_start_of_stream = 0; |
| if (self->seekable && self->encoder) { |
| PyObject *cookieObj; |
| int cmp; |
| |
| self->encoding_start_of_stream = 1; |
| |
| cookieObj = PyObject_CallMethodObjArgs(buffer, _PyIO_str_tell, NULL); |
| if (cookieObj == NULL) |
| goto error; |
| |
| cmp = PyObject_RichCompareBool(cookieObj, _PyIO_zero, Py_EQ); |
| Py_DECREF(cookieObj); |
| if (cmp < 0) { |
| goto error; |
| } |
| |
| if (cmp == 0) { |
| self->encoding_start_of_stream = 0; |
| res = PyObject_CallMethodObjArgs(self->encoder, _PyIO_str_setstate, |
| _PyIO_zero, NULL); |
| if (res == NULL) |
| goto error; |
| Py_DECREF(res); |
| } |
| } |
| |
| self->ok = 1; |
| return 0; |
| |
| error: |
| Py_XDECREF(codec_info); |
| return -1; |
| } |
| |
| static int |
| _textiowrapper_clear(textio *self) |
| { |
| self->ok = 0; |
| Py_CLEAR(self->buffer); |
| Py_CLEAR(self->encoding); |
| Py_CLEAR(self->encoder); |
| Py_CLEAR(self->decoder); |
| Py_CLEAR(self->readnl); |
| Py_CLEAR(self->decoded_chars); |
| Py_CLEAR(self->pending_bytes); |
| Py_CLEAR(self->snapshot); |
| Py_CLEAR(self->errors); |
| Py_CLEAR(self->raw); |
| return 0; |
| } |
| |
| static void |
| textiowrapper_dealloc(textio *self) |
| { |
| self->finalizing = 1; |
| if (_PyIOBase_finalize((PyObject *) self) < 0) |
| return; |
| _textiowrapper_clear(self); |
| _PyObject_GC_UNTRACK(self); |
| if (self->weakreflist != NULL) |
| PyObject_ClearWeakRefs((PyObject *)self); |
| Py_CLEAR(self->dict); |
| Py_TYPE(self)->tp_free((PyObject *)self); |
| } |
| |
| static int |
| textiowrapper_traverse(textio *self, visitproc visit, void *arg) |
| { |
| Py_VISIT(self->buffer); |
| Py_VISIT(self->encoding); |
| Py_VISIT(self->encoder); |
| Py_VISIT(self->decoder); |
| Py_VISIT(self->readnl); |
| Py_VISIT(self->decoded_chars); |
| Py_VISIT(self->pending_bytes); |
| Py_VISIT(self->snapshot); |
| Py_VISIT(self->errors); |
| Py_VISIT(self->raw); |
| |
| Py_VISIT(self->dict); |
| return 0; |
| } |
| |
| static int |
| textiowrapper_clear(textio *self) |
| { |
| if (_textiowrapper_clear(self) < 0) |
| return -1; |
| Py_CLEAR(self->dict); |
| return 0; |
| } |
| |
| static PyObject * |
| textiowrapper_closed_get(textio *self, void *context); |
| |
| /* This macro takes some shortcuts to make the common case faster. */ |
| #define CHECK_CLOSED(self) \ |
| do { \ |
| int r; \ |
| PyObject *_res; \ |
| if (Py_TYPE(self) == &PyTextIOWrapper_Type) { \ |
| if (self->raw != NULL) \ |
| r = _PyFileIO_closed(self->raw); \ |
| else { \ |
| _res = textiowrapper_closed_get(self, NULL); \ |
| if (_res == NULL) \ |
| return NULL; \ |
| r = PyObject_IsTrue(_res); \ |
| Py_DECREF(_res); \ |
| if (r < 0) \ |
| return NULL; \ |
| } \ |
| if (r > 0) { \ |
| PyErr_SetString(PyExc_ValueError, \ |
| "I/O operation on closed file."); \ |
| return NULL; \ |
| } \ |
| } \ |
| else if (_PyIOBase_check_closed((PyObject *)self, Py_True) == NULL) \ |
| return NULL; \ |
| } while (0) |
| |
| #define CHECK_INITIALIZED(self) \ |
| if (self->ok <= 0) { \ |
| PyErr_SetString(PyExc_ValueError, \ |
| "I/O operation on uninitialized object"); \ |
| return NULL; \ |
| } |
| |
| #define CHECK_ATTACHED(self) \ |
| CHECK_INITIALIZED(self); \ |
| if (self->detached) { \ |
| PyErr_SetString(PyExc_ValueError, \ |
| "underlying buffer has been detached"); \ |
| return NULL; \ |
| } |
| |
| #define CHECK_ATTACHED_INT(self) \ |
| if (self->ok <= 0) { \ |
| PyErr_SetString(PyExc_ValueError, \ |
| "I/O operation on uninitialized object"); \ |
| return -1; \ |
| } else if (self->detached) { \ |
| PyErr_SetString(PyExc_ValueError, \ |
| "underlying buffer has been detached"); \ |
| return -1; \ |
| } |
| |
| |
| /*[clinic input] |
| _io.TextIOWrapper.detach |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_detach_impl(textio *self) |
| /*[clinic end generated code: output=7ba3715cd032d5f2 input=e5a71fbda9e1d9f9]*/ |
| { |
| PyObject *buffer, *res; |
| CHECK_ATTACHED(self); |
| res = PyObject_CallMethodObjArgs((PyObject *)self, _PyIO_str_flush, NULL); |
| if (res == NULL) |
| return NULL; |
| Py_DECREF(res); |
| buffer = self->buffer; |
| self->buffer = NULL; |
| self->detached = 1; |
| return buffer; |
| } |
| |
| /* Flush the internal write buffer. This doesn't explicitly flush the |
| underlying buffered object, though. */ |
| static int |
| _textiowrapper_writeflush(textio *self) |
| { |
| PyObject *pending, *b, *ret; |
| |
| if (self->pending_bytes == NULL) |
| return 0; |
| |
| pending = self->pending_bytes; |
| Py_INCREF(pending); |
| self->pending_bytes_count = 0; |
| Py_CLEAR(self->pending_bytes); |
| |
| b = _PyBytes_Join(_PyIO_empty_bytes, pending); |
| Py_DECREF(pending); |
| if (b == NULL) |
| return -1; |
| ret = NULL; |
| do { |
| ret = PyObject_CallMethodObjArgs(self->buffer, |
| _PyIO_str_write, b, NULL); |
| } while (ret == NULL && _PyIO_trap_eintr()); |
| Py_DECREF(b); |
| if (ret == NULL) |
| return -1; |
| Py_DECREF(ret); |
| return 0; |
| } |
| |
| /*[clinic input] |
| _io.TextIOWrapper.write |
| text: unicode |
| / |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_write_impl(textio *self, PyObject *text) |
| /*[clinic end generated code: output=d2deb0d50771fcec input=fdf19153584a0e44]*/ |
| { |
| PyObject *ret; |
| PyObject *b; |
| Py_ssize_t textlen; |
| int haslf = 0; |
| int needflush = 0, text_needflush = 0; |
| |
| if (PyUnicode_READY(text) == -1) |
| return NULL; |
| |
| CHECK_ATTACHED(self); |
| CHECK_CLOSED(self); |
| |
| if (self->encoder == NULL) |
| return _unsupported("not writable"); |
| |
| Py_INCREF(text); |
| |
| textlen = PyUnicode_GET_LENGTH(text); |
| |
| if ((self->writetranslate && self->writenl != NULL) || self->line_buffering) |
| if (PyUnicode_FindChar(text, '\n', 0, PyUnicode_GET_LENGTH(text), 1) != -1) |
| haslf = 1; |
| |
| if (haslf && self->writetranslate && self->writenl != NULL) { |
| PyObject *newtext = _PyObject_CallMethodId( |
| text, &PyId_replace, "ss", "\n", self->writenl); |
| Py_DECREF(text); |
| if (newtext == NULL) |
| return NULL; |
| text = newtext; |
| } |
| |
| if (self->write_through) |
| text_needflush = 1; |
| if (self->line_buffering && |
| (haslf || |
| PyUnicode_FindChar(text, '\r', 0, PyUnicode_GET_LENGTH(text), 1) != -1)) |
| needflush = 1; |
| |
| /* XXX What if we were just reading? */ |
| if (self->encodefunc != NULL) { |
| b = (*self->encodefunc)((PyObject *) self, text); |
| self->encoding_start_of_stream = 0; |
| } |
| else |
| b = PyObject_CallMethodObjArgs(self->encoder, |
| _PyIO_str_encode, text, NULL); |
| Py_DECREF(text); |
| if (b == NULL) |
| return NULL; |
| |
| if (self->pending_bytes == NULL) { |
| self->pending_bytes = PyList_New(0); |
| if (self->pending_bytes == NULL) { |
| Py_DECREF(b); |
| return NULL; |
| } |
| self->pending_bytes_count = 0; |
| } |
| if (PyList_Append(self->pending_bytes, b) < 0) { |
| Py_DECREF(b); |
| return NULL; |
| } |
| self->pending_bytes_count += PyBytes_GET_SIZE(b); |
| Py_DECREF(b); |
| if (self->pending_bytes_count > self->chunk_size || needflush || |
| text_needflush) { |
| if (_textiowrapper_writeflush(self) < 0) |
| return NULL; |
| } |
| |
| if (needflush) { |
| ret = PyObject_CallMethodObjArgs(self->buffer, _PyIO_str_flush, NULL); |
| if (ret == NULL) |
| return NULL; |
| Py_DECREF(ret); |
| } |
| |
| Py_CLEAR(self->snapshot); |
| |
| if (self->decoder) { |
| ret = _PyObject_CallMethodId(self->decoder, &PyId_reset, NULL); |
| if (ret == NULL) |
| return NULL; |
| Py_DECREF(ret); |
| } |
| |
| return PyLong_FromSsize_t(textlen); |
| } |
| |
| /* Steal a reference to chars and store it in the decoded_char buffer; |
| */ |
| static void |
| textiowrapper_set_decoded_chars(textio *self, PyObject *chars) |
| { |
| Py_XSETREF(self->decoded_chars, chars); |
| self->decoded_chars_used = 0; |
| } |
| |
| static PyObject * |
| textiowrapper_get_decoded_chars(textio *self, Py_ssize_t n) |
| { |
| PyObject *chars; |
| Py_ssize_t avail; |
| |
| if (self->decoded_chars == NULL) |
| return PyUnicode_FromStringAndSize(NULL, 0); |
| |
| /* decoded_chars is guaranteed to be "ready". */ |
| avail = (PyUnicode_GET_LENGTH(self->decoded_chars) |
| - self->decoded_chars_used); |
| |
| assert(avail >= 0); |
| |
| if (n < 0 || n > avail) |
| n = avail; |
| |
| if (self->decoded_chars_used > 0 || n < avail) { |
| chars = PyUnicode_Substring(self->decoded_chars, |
| self->decoded_chars_used, |
| self->decoded_chars_used + n); |
| if (chars == NULL) |
| return NULL; |
| } |
| else { |
| chars = self->decoded_chars; |
| Py_INCREF(chars); |
| } |
| |
| self->decoded_chars_used += n; |
| return chars; |
| } |
| |
| /* Read and decode the next chunk of data from the BufferedReader. |
| */ |
| static int |
| textiowrapper_read_chunk(textio *self, Py_ssize_t size_hint) |
| { |
| PyObject *dec_buffer = NULL; |
| PyObject *dec_flags = NULL; |
| PyObject *input_chunk = NULL; |
| Py_buffer input_chunk_buf; |
| PyObject *decoded_chars, *chunk_size; |
| Py_ssize_t nbytes, nchars; |
| int eof; |
| |
| /* The return value is True unless EOF was reached. The decoded string is |
| * placed in self._decoded_chars (replacing its previous value). The |
| * entire input chunk is sent to the decoder, though some of it may remain |
| * buffered in the decoder, yet to be converted. |
| */ |
| |
| if (self->decoder == NULL) { |
| _unsupported("not readable"); |
| return -1; |
| } |
| |
| if (self->telling) { |
| /* To prepare for tell(), we need to snapshot a point in the file |
| * where the decoder's input buffer is empty. |
| */ |
| |
| PyObject *state = PyObject_CallMethodObjArgs(self->decoder, |
| _PyIO_str_getstate, NULL); |
| if (state == NULL) |
| return -1; |
| /* Given this, we know there was a valid snapshot point |
| * len(dec_buffer) bytes ago with decoder state (b'', dec_flags). |
| */ |
| if (PyArg_ParseTuple(state, "OO", &dec_buffer, &dec_flags) < 0) { |
| Py_DECREF(state); |
| return -1; |
| } |
| |
| if (!PyBytes_Check(dec_buffer)) { |
| PyErr_Format(PyExc_TypeError, |
| "decoder getstate() should have returned a bytes " |
| "object, not '%.200s'", |
| Py_TYPE(dec_buffer)->tp_name); |
| Py_DECREF(state); |
| return -1; |
| } |
| Py_INCREF(dec_buffer); |
| Py_INCREF(dec_flags); |
| Py_DECREF(state); |
| } |
| |
| /* Read a chunk, decode it, and put the result in self._decoded_chars. */ |
| if (size_hint > 0) { |
| size_hint = (Py_ssize_t)(Py_MAX(self->b2cratio, 1.0) * size_hint); |
| } |
| chunk_size = PyLong_FromSsize_t(Py_MAX(self->chunk_size, size_hint)); |
| if (chunk_size == NULL) |
| goto fail; |
| |
| input_chunk = PyObject_CallMethodObjArgs(self->buffer, |
| (self->has_read1 ? _PyIO_str_read1: _PyIO_str_read), |
| chunk_size, NULL); |
| Py_DECREF(chunk_size); |
| if (input_chunk == NULL) |
| goto fail; |
| |
| if (PyObject_GetBuffer(input_chunk, &input_chunk_buf, 0) != 0) { |
| PyErr_Format(PyExc_TypeError, |
| "underlying %s() should have returned a bytes-like object, " |
| "not '%.200s'", (self->has_read1 ? "read1": "read"), |
| Py_TYPE(input_chunk)->tp_name); |
| goto fail; |
| } |
| |
| nbytes = input_chunk_buf.len; |
| eof = (nbytes == 0); |
| if (Py_TYPE(self->decoder) == &PyIncrementalNewlineDecoder_Type) { |
| decoded_chars = _PyIncrementalNewlineDecoder_decode( |
| self->decoder, input_chunk, eof); |
| } |
| else { |
| decoded_chars = PyObject_CallMethodObjArgs(self->decoder, |
| _PyIO_str_decode, input_chunk, eof ? Py_True : Py_False, NULL); |
| } |
| PyBuffer_Release(&input_chunk_buf); |
| |
| if (check_decoded(decoded_chars) < 0) |
| goto fail; |
| textiowrapper_set_decoded_chars(self, decoded_chars); |
| nchars = PyUnicode_GET_LENGTH(decoded_chars); |
| if (nchars > 0) |
| self->b2cratio = (double) nbytes / nchars; |
| else |
| self->b2cratio = 0.0; |
| if (nchars > 0) |
| eof = 0; |
| |
| if (self->telling) { |
| /* At the snapshot point, len(dec_buffer) bytes before the read, the |
| * next input to be decoded is dec_buffer + input_chunk. |
| */ |
| PyObject *next_input = dec_buffer; |
| PyBytes_Concat(&next_input, input_chunk); |
| if (next_input == NULL) { |
| dec_buffer = NULL; /* Reference lost to PyBytes_Concat */ |
| goto fail; |
| } |
| Py_XSETREF(self->snapshot, Py_BuildValue("NN", dec_flags, next_input)); |
| } |
| Py_DECREF(input_chunk); |
| |
| return (eof == 0); |
| |
| fail: |
| Py_XDECREF(dec_buffer); |
| Py_XDECREF(dec_flags); |
| Py_XDECREF(input_chunk); |
| return -1; |
| } |
| |
| /*[clinic input] |
| _io.TextIOWrapper.read |
| size as n: io_ssize_t = -1 |
| / |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_read_impl(textio *self, Py_ssize_t n) |
| /*[clinic end generated code: output=7e651ce6cc6a25a6 input=8c09398424085cca]*/ |
| { |
| PyObject *result = NULL, *chunks = NULL; |
| |
| CHECK_ATTACHED(self); |
| CHECK_CLOSED(self); |
| |
| if (self->decoder == NULL) |
| return _unsupported("not readable"); |
| |
| if (_textiowrapper_writeflush(self) < 0) |
| return NULL; |
| |
| if (n < 0) { |
| /* Read everything */ |
| PyObject *bytes = _PyObject_CallMethodId(self->buffer, &PyId_read, NULL); |
| PyObject *decoded; |
| if (bytes == NULL) |
| goto fail; |
| |
| if (Py_TYPE(self->decoder) == &PyIncrementalNewlineDecoder_Type) |
| decoded = _PyIncrementalNewlineDecoder_decode(self->decoder, |
| bytes, 1); |
| else |
| decoded = PyObject_CallMethodObjArgs( |
| self->decoder, _PyIO_str_decode, bytes, Py_True, NULL); |
| Py_DECREF(bytes); |
| if (check_decoded(decoded) < 0) |
| goto fail; |
| |
| result = textiowrapper_get_decoded_chars(self, -1); |
| |
| if (result == NULL) { |
| Py_DECREF(decoded); |
| return NULL; |
| } |
| |
| PyUnicode_AppendAndDel(&result, decoded); |
| if (result == NULL) |
| goto fail; |
| |
| Py_CLEAR(self->snapshot); |
| return result; |
| } |
| else { |
| int res = 1; |
| Py_ssize_t remaining = n; |
| |
| result = textiowrapper_get_decoded_chars(self, n); |
| if (result == NULL) |
| goto fail; |
| if (PyUnicode_READY(result) == -1) |
| goto fail; |
| remaining -= PyUnicode_GET_LENGTH(result); |
| |
| /* Keep reading chunks until we have n characters to return */ |
| while (remaining > 0) { |
| res = textiowrapper_read_chunk(self, remaining); |
| if (res < 0) { |
| /* NOTE: PyErr_SetFromErrno() calls PyErr_CheckSignals() |
| when EINTR occurs so we needn't do it ourselves. */ |
| if (_PyIO_trap_eintr()) { |
| continue; |
| } |
| goto fail; |
| } |
| if (res == 0) /* EOF */ |
| break; |
| if (chunks == NULL) { |
| chunks = PyList_New(0); |
| if (chunks == NULL) |
| goto fail; |
| } |
| if (PyUnicode_GET_LENGTH(result) > 0 && |
| PyList_Append(chunks, result) < 0) |
| goto fail; |
| Py_DECREF(result); |
| result = textiowrapper_get_decoded_chars(self, remaining); |
| if (result == NULL) |
| goto fail; |
| remaining -= PyUnicode_GET_LENGTH(result); |
| } |
| if (chunks != NULL) { |
| if (result != NULL && PyList_Append(chunks, result) < 0) |
| goto fail; |
| Py_XSETREF(result, PyUnicode_Join(_PyIO_empty_str, chunks)); |
| if (result == NULL) |
| goto fail; |
| Py_CLEAR(chunks); |
| } |
| return result; |
| } |
| fail: |
| Py_XDECREF(result); |
| Py_XDECREF(chunks); |
| return NULL; |
| } |
| |
| |
| /* NOTE: `end` must point to the real end of the Py_UCS4 storage, |
| that is to the NUL character. Otherwise the function will produce |
| incorrect results. */ |
| static const char * |
| find_control_char(int kind, const char *s, const char *end, Py_UCS4 ch) |
| { |
| if (kind == PyUnicode_1BYTE_KIND) { |
| assert(ch < 256); |
| return (char *) memchr((void *) s, (char) ch, end - s); |
| } |
| for (;;) { |
| while (PyUnicode_READ(kind, s, 0) > ch) |
| s += kind; |
| if (PyUnicode_READ(kind, s, 0) == ch) |
| return s; |
| if (s == end) |
| return NULL; |
| s += kind; |
| } |
| } |
| |
| Py_ssize_t |
| _PyIO_find_line_ending( |
| int translated, int universal, PyObject *readnl, |
| int kind, const char *start, const char *end, Py_ssize_t *consumed) |
| { |
| Py_ssize_t len = ((char*)end - (char*)start)/kind; |
| |
| if (translated) { |
| /* Newlines are already translated, only search for \n */ |
| const char *pos = find_control_char(kind, start, end, '\n'); |
| if (pos != NULL) |
| return (pos - start)/kind + 1; |
| else { |
| *consumed = len; |
| return -1; |
| } |
| } |
| else if (universal) { |
| /* Universal newline search. Find any of \r, \r\n, \n |
| * The decoder ensures that \r\n are not split in two pieces |
| */ |
| const char *s = start; |
| for (;;) { |
| Py_UCS4 ch; |
| /* Fast path for non-control chars. The loop always ends |
| since the Unicode string is NUL-terminated. */ |
| while (PyUnicode_READ(kind, s, 0) > '\r') |
| s += kind; |
| if (s >= end) { |
| *consumed = len; |
| return -1; |
| } |
| ch = PyUnicode_READ(kind, s, 0); |
| s += kind; |
| if (ch == '\n') |
| return (s - start)/kind; |
| if (ch == '\r') { |
| if (PyUnicode_READ(kind, s, 0) == '\n') |
| return (s - start)/kind + 1; |
| else |
| return (s - start)/kind; |
| } |
| } |
| } |
| else { |
| /* Non-universal mode. */ |
| Py_ssize_t readnl_len = PyUnicode_GET_LENGTH(readnl); |
| Py_UCS1 *nl = PyUnicode_1BYTE_DATA(readnl); |
| /* Assume that readnl is an ASCII character. */ |
| assert(PyUnicode_KIND(readnl) == PyUnicode_1BYTE_KIND); |
| if (readnl_len == 1) { |
| const char *pos = find_control_char(kind, start, end, nl[0]); |
| if (pos != NULL) |
| return (pos - start)/kind + 1; |
| *consumed = len; |
| return -1; |
| } |
| else { |
| const char *s = start; |
| const char *e = end - (readnl_len - 1)*kind; |
| const char *pos; |
| if (e < s) |
| e = s; |
| while (s < e) { |
| Py_ssize_t i; |
| const char *pos = find_control_char(kind, s, end, nl[0]); |
| if (pos == NULL || pos >= e) |
| break; |
| for (i = 1; i < readnl_len; i++) { |
| if (PyUnicode_READ(kind, pos, i) != nl[i]) |
| break; |
| } |
| if (i == readnl_len) |
| return (pos - start)/kind + readnl_len; |
| s = pos + kind; |
| } |
| pos = find_control_char(kind, e, end, nl[0]); |
| if (pos == NULL) |
| *consumed = len; |
| else |
| *consumed = (pos - start)/kind; |
| return -1; |
| } |
| } |
| } |
| |
| static PyObject * |
| _textiowrapper_readline(textio *self, Py_ssize_t limit) |
| { |
| PyObject *line = NULL, *chunks = NULL, *remaining = NULL; |
| Py_ssize_t start, endpos, chunked, offset_to_buffer; |
| int res; |
| |
| CHECK_CLOSED(self); |
| |
| if (_textiowrapper_writeflush(self) < 0) |
| return NULL; |
| |
| chunked = 0; |
| |
| while (1) { |
| char *ptr; |
| Py_ssize_t line_len; |
| int kind; |
| Py_ssize_t consumed = 0; |
| |
| /* First, get some data if necessary */ |
| res = 1; |
| while (!self->decoded_chars || |
| !PyUnicode_GET_LENGTH(self->decoded_chars)) { |
| res = textiowrapper_read_chunk(self, 0); |
| if (res < 0) { |
| /* NOTE: PyErr_SetFromErrno() calls PyErr_CheckSignals() |
| when EINTR occurs so we needn't do it ourselves. */ |
| if (_PyIO_trap_eintr()) { |
| continue; |
| } |
| goto error; |
| } |
| if (res == 0) |
| break; |
| } |
| if (res == 0) { |
| /* end of file */ |
| textiowrapper_set_decoded_chars(self, NULL); |
| Py_CLEAR(self->snapshot); |
| start = endpos = offset_to_buffer = 0; |
| break; |
| } |
| |
| if (remaining == NULL) { |
| line = self->decoded_chars; |
| start = self->decoded_chars_used; |
| offset_to_buffer = 0; |
| Py_INCREF(line); |
| } |
| else { |
| assert(self->decoded_chars_used == 0); |
| line = PyUnicode_Concat(remaining, self->decoded_chars); |
| start = 0; |
| offset_to_buffer = PyUnicode_GET_LENGTH(remaining); |
| Py_CLEAR(remaining); |
| if (line == NULL) |
| goto error; |
| if (PyUnicode_READY(line) == -1) |
| goto error; |
| } |
| |
| ptr = PyUnicode_DATA(line); |
| line_len = PyUnicode_GET_LENGTH(line); |
| kind = PyUnicode_KIND(line); |
| |
| endpos = _PyIO_find_line_ending( |
| self->readtranslate, self->readuniversal, self->readnl, |
| kind, |
| ptr + kind * start, |
| ptr + kind * line_len, |
| &consumed); |
| if (endpos >= 0) { |
| endpos += start; |
| if (limit >= 0 && (endpos - start) + chunked >= limit) |
| endpos = start + limit - chunked; |
| break; |
| } |
| |
| /* We can put aside up to `endpos` */ |
| endpos = consumed + start; |
| if (limit >= 0 && (endpos - start) + chunked >= limit) { |
| /* Didn't find line ending, but reached length limit */ |
| endpos = start + limit - chunked; |
| break; |
| } |
| |
| if (endpos > start) { |
| /* No line ending seen yet - put aside current data */ |
| PyObject *s; |
| if (chunks == NULL) { |
| chunks = PyList_New(0); |
| if (chunks == NULL) |
| goto error; |
| } |
| s = PyUnicode_Substring(line, start, endpos); |
| if (s == NULL) |
| goto error; |
| if (PyList_Append(chunks, s) < 0) { |
| Py_DECREF(s); |
| goto error; |
| } |
| chunked += PyUnicode_GET_LENGTH(s); |
| Py_DECREF(s); |
| } |
| /* There may be some remaining bytes we'll have to prepend to the |
| next chunk of data */ |
| if (endpos < line_len) { |
| remaining = PyUnicode_Substring(line, endpos, line_len); |
| if (remaining == NULL) |
| goto error; |
| } |
| Py_CLEAR(line); |
| /* We have consumed the buffer */ |
| textiowrapper_set_decoded_chars(self, NULL); |
| } |
| |
| if (line != NULL) { |
| /* Our line ends in the current buffer */ |
| self->decoded_chars_used = endpos - offset_to_buffer; |
| if (start > 0 || endpos < PyUnicode_GET_LENGTH(line)) { |
| PyObject *s = PyUnicode_Substring(line, start, endpos); |
| Py_CLEAR(line); |
| if (s == NULL) |
| goto error; |
| line = s; |
| } |
| } |
| if (remaining != NULL) { |
| if (chunks == NULL) { |
| chunks = PyList_New(0); |
| if (chunks == NULL) |
| goto error; |
| } |
| if (PyList_Append(chunks, remaining) < 0) |
| goto error; |
| Py_CLEAR(remaining); |
| } |
| if (chunks != NULL) { |
| if (line != NULL) { |
| if (PyList_Append(chunks, line) < 0) |
| goto error; |
| Py_DECREF(line); |
| } |
| line = PyUnicode_Join(_PyIO_empty_str, chunks); |
| if (line == NULL) |
| goto error; |
| Py_CLEAR(chunks); |
| } |
| if (line == NULL) { |
| Py_INCREF(_PyIO_empty_str); |
| line = _PyIO_empty_str; |
| } |
| |
| return line; |
| |
| error: |
| Py_XDECREF(chunks); |
| Py_XDECREF(remaining); |
| Py_XDECREF(line); |
| return NULL; |
| } |
| |
| /*[clinic input] |
| _io.TextIOWrapper.readline |
| size: Py_ssize_t = -1 |
| / |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_readline_impl(textio *self, Py_ssize_t size) |
| /*[clinic end generated code: output=344afa98804e8b25 input=56c7172483b36db6]*/ |
| { |
| CHECK_ATTACHED(self); |
| return _textiowrapper_readline(self, size); |
| } |
| |
| /* Seek and Tell */ |
| |
| typedef struct { |
| Py_off_t start_pos; |
| int dec_flags; |
| int bytes_to_feed; |
| int chars_to_skip; |
| char need_eof; |
| } cookie_type; |
| |
| /* |
| To speed up cookie packing/unpacking, we store the fields in a temporary |
| string and call _PyLong_FromByteArray() or _PyLong_AsByteArray (resp.). |
| The following macros define at which offsets in the intermediary byte |
| string the various CookieStruct fields will be stored. |
| */ |
| |
| #define COOKIE_BUF_LEN (sizeof(Py_off_t) + 3 * sizeof(int) + sizeof(char)) |
| |
| #if PY_BIG_ENDIAN |
| /* We want the least significant byte of start_pos to also be the least |
| significant byte of the cookie, which means that in big-endian mode we |
| must copy the fields in reverse order. */ |
| |
| # define OFF_START_POS (sizeof(char) + 3 * sizeof(int)) |
| # define OFF_DEC_FLAGS (sizeof(char) + 2 * sizeof(int)) |
| # define OFF_BYTES_TO_FEED (sizeof(char) + sizeof(int)) |
| # define OFF_CHARS_TO_SKIP (sizeof(char)) |
| # define OFF_NEED_EOF 0 |
| |
| #else |
| /* Little-endian mode: the least significant byte of start_pos will |
| naturally end up the least significant byte of the cookie. */ |
| |
| # define OFF_START_POS 0 |
| # define OFF_DEC_FLAGS (sizeof(Py_off_t)) |
| # define OFF_BYTES_TO_FEED (sizeof(Py_off_t) + sizeof(int)) |
| # define OFF_CHARS_TO_SKIP (sizeof(Py_off_t) + 2 * sizeof(int)) |
| # define OFF_NEED_EOF (sizeof(Py_off_t) + 3 * sizeof(int)) |
| |
| #endif |
| |
| static int |
| textiowrapper_parse_cookie(cookie_type *cookie, PyObject *cookieObj) |
| { |
| unsigned char buffer[COOKIE_BUF_LEN]; |
| PyLongObject *cookieLong = (PyLongObject *)PyNumber_Long(cookieObj); |
| if (cookieLong == NULL) |
| return -1; |
| |
| if (_PyLong_AsByteArray(cookieLong, buffer, sizeof(buffer), |
| PY_LITTLE_ENDIAN, 0) < 0) { |
| Py_DECREF(cookieLong); |
| return -1; |
| } |
| Py_DECREF(cookieLong); |
| |
| memcpy(&cookie->start_pos, buffer + OFF_START_POS, sizeof(cookie->start_pos)); |
| memcpy(&cookie->dec_flags, buffer + OFF_DEC_FLAGS, sizeof(cookie->dec_flags)); |
| memcpy(&cookie->bytes_to_feed, buffer + OFF_BYTES_TO_FEED, sizeof(cookie->bytes_to_feed)); |
| memcpy(&cookie->chars_to_skip, buffer + OFF_CHARS_TO_SKIP, sizeof(cookie->chars_to_skip)); |
| memcpy(&cookie->need_eof, buffer + OFF_NEED_EOF, sizeof(cookie->need_eof)); |
| |
| return 0; |
| } |
| |
| static PyObject * |
| textiowrapper_build_cookie(cookie_type *cookie) |
| { |
| unsigned char buffer[COOKIE_BUF_LEN]; |
| |
| memcpy(buffer + OFF_START_POS, &cookie->start_pos, sizeof(cookie->start_pos)); |
| memcpy(buffer + OFF_DEC_FLAGS, &cookie->dec_flags, sizeof(cookie->dec_flags)); |
| memcpy(buffer + OFF_BYTES_TO_FEED, &cookie->bytes_to_feed, sizeof(cookie->bytes_to_feed)); |
| memcpy(buffer + OFF_CHARS_TO_SKIP, &cookie->chars_to_skip, sizeof(cookie->chars_to_skip)); |
| memcpy(buffer + OFF_NEED_EOF, &cookie->need_eof, sizeof(cookie->need_eof)); |
| |
| return _PyLong_FromByteArray(buffer, sizeof(buffer), |
| PY_LITTLE_ENDIAN, 0); |
| } |
| |
| static int |
| _textiowrapper_decoder_setstate(textio *self, cookie_type *cookie) |
| { |
| PyObject *res; |
| /* When seeking to the start of the stream, we call decoder.reset() |
| rather than decoder.getstate(). |
| This is for a few decoders such as utf-16 for which the state value |
| at start is not (b"", 0) but e.g. (b"", 2) (meaning, in the case of |
| utf-16, that we are expecting a BOM). |
| */ |
| if (cookie->start_pos == 0 && cookie->dec_flags == 0) |
| res = PyObject_CallMethodObjArgs(self->decoder, _PyIO_str_reset, NULL); |
| else |
| res = _PyObject_CallMethodId(self->decoder, &PyId_setstate, |
| "((yi))", "", cookie->dec_flags); |
| if (res == NULL) |
| return -1; |
| Py_DECREF(res); |
| return 0; |
| } |
| |
| static int |
| _textiowrapper_encoder_reset(textio *self, int start_of_stream) |
| { |
| PyObject *res; |
| if (start_of_stream) { |
| res = PyObject_CallMethodObjArgs(self->encoder, _PyIO_str_reset, NULL); |
| self->encoding_start_of_stream = 1; |
| } |
| else { |
| res = PyObject_CallMethodObjArgs(self->encoder, _PyIO_str_setstate, |
| _PyIO_zero, NULL); |
| self->encoding_start_of_stream = 0; |
| } |
| if (res == NULL) |
| return -1; |
| Py_DECREF(res); |
| return 0; |
| } |
| |
| static int |
| _textiowrapper_encoder_setstate(textio *self, cookie_type *cookie) |
| { |
| /* Same as _textiowrapper_decoder_setstate() above. */ |
| return _textiowrapper_encoder_reset( |
| self, cookie->start_pos == 0 && cookie->dec_flags == 0); |
| } |
| |
| /*[clinic input] |
| _io.TextIOWrapper.seek |
| cookie as cookieObj: object |
| whence: int = 0 |
| / |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_seek_impl(textio *self, PyObject *cookieObj, int whence) |
| /*[clinic end generated code: output=0a15679764e2d04d input=0458abeb3d7842be]*/ |
| { |
| PyObject *posobj; |
| cookie_type cookie; |
| PyObject *res; |
| int cmp; |
| |
| CHECK_ATTACHED(self); |
| CHECK_CLOSED(self); |
| |
| Py_INCREF(cookieObj); |
| |
| if (!self->seekable) { |
| _unsupported("underlying stream is not seekable"); |
| goto fail; |
| } |
| |
| if (whence == 1) { |
| /* seek relative to current position */ |
| cmp = PyObject_RichCompareBool(cookieObj, _PyIO_zero, Py_EQ); |
| if (cmp < 0) |
| goto fail; |
| |
| if (cmp == 0) { |
| _unsupported("can't do nonzero cur-relative seeks"); |
| goto fail; |
| } |
| |
| /* Seeking to the current position should attempt to |
| * sync the underlying buffer with the current position. |
| */ |
| Py_DECREF(cookieObj); |
| cookieObj = _PyObject_CallMethodId((PyObject *)self, &PyId_tell, NULL); |
| if (cookieObj == NULL) |
| goto fail; |
| } |
| else if (whence == 2) { |
| /* seek relative to end of file */ |
| cmp = PyObject_RichCompareBool(cookieObj, _PyIO_zero, Py_EQ); |
| if (cmp < 0) |
| goto fail; |
| |
| if (cmp == 0) { |
| _unsupported("can't do nonzero end-relative seeks"); |
| goto fail; |
| } |
| |
| res = _PyObject_CallMethodId((PyObject *)self, &PyId_flush, NULL); |
| if (res == NULL) |
| goto fail; |
| Py_DECREF(res); |
| |
| textiowrapper_set_decoded_chars(self, NULL); |
| Py_CLEAR(self->snapshot); |
| if (self->decoder) { |
| res = _PyObject_CallMethodId(self->decoder, &PyId_reset, NULL); |
| if (res == NULL) |
| goto fail; |
| Py_DECREF(res); |
| } |
| |
| res = _PyObject_CallMethodId(self->buffer, &PyId_seek, "ii", 0, 2); |
| Py_CLEAR(cookieObj); |
| if (res == NULL) |
| goto fail; |
| if (self->encoder) { |
| /* If seek() == 0, we are at the start of stream, otherwise not */ |
| cmp = PyObject_RichCompareBool(res, _PyIO_zero, Py_EQ); |
| if (cmp < 0 || _textiowrapper_encoder_reset(self, cmp)) { |
| Py_DECREF(res); |
| goto fail; |
| } |
| } |
| return res; |
| } |
| else if (whence != 0) { |
| PyErr_Format(PyExc_ValueError, |
| "invalid whence (%d, should be 0, 1 or 2)", whence); |
| goto fail; |
| } |
| |
| cmp = PyObject_RichCompareBool(cookieObj, _PyIO_zero, Py_LT); |
| if (cmp < 0) |
| goto fail; |
| |
| if (cmp == 1) { |
| PyErr_Format(PyExc_ValueError, |
| "negative seek position %R", cookieObj); |
| goto fail; |
| } |
| |
| res = PyObject_CallMethodObjArgs((PyObject *)self, _PyIO_str_flush, NULL); |
| if (res == NULL) |
| goto fail; |
| Py_DECREF(res); |
| |
| /* The strategy of seek() is to go back to the safe start point |
| * and replay the effect of read(chars_to_skip) from there. |
| */ |
| if (textiowrapper_parse_cookie(&cookie, cookieObj) < 0) |
| goto fail; |
| |
| /* Seek back to the safe start point. */ |
| posobj = PyLong_FromOff_t(cookie.start_pos); |
| if (posobj == NULL) |
| goto fail; |
| res = PyObject_CallMethodObjArgs(self->buffer, |
| _PyIO_str_seek, posobj, NULL); |
| Py_DECREF(posobj); |
| if (res == NULL) |
| goto fail; |
| Py_DECREF(res); |
| |
| textiowrapper_set_decoded_chars(self, NULL); |
| Py_CLEAR(self->snapshot); |
| |
| /* Restore the decoder to its state from the safe start point. */ |
| if (self->decoder) { |
| if (_textiowrapper_decoder_setstate(self, &cookie) < 0) |
| goto fail; |
| } |
| |
| if (cookie.chars_to_skip) { |
| /* Just like _read_chunk, feed the decoder and save a snapshot. */ |
| PyObject *input_chunk = _PyObject_CallMethodId( |
| self->buffer, &PyId_read, "i", cookie.bytes_to_feed); |
| PyObject *decoded; |
| |
| if (input_chunk == NULL) |
| goto fail; |
| |
| if (!PyBytes_Check(input_chunk)) { |
| PyErr_Format(PyExc_TypeError, |
| "underlying read() should have returned a bytes " |
| "object, not '%.200s'", |
| Py_TYPE(input_chunk)->tp_name); |
| Py_DECREF(input_chunk); |
| goto fail; |
| } |
| |
| self->snapshot = Py_BuildValue("iN", cookie.dec_flags, input_chunk); |
| if (self->snapshot == NULL) { |
| Py_DECREF(input_chunk); |
| goto fail; |
| } |
| |
| decoded = _PyObject_CallMethodId(self->decoder, &PyId_decode, |
| "Oi", input_chunk, (int)cookie.need_eof); |
| |
| if (check_decoded(decoded) < 0) |
| goto fail; |
| |
| textiowrapper_set_decoded_chars(self, decoded); |
| |
| /* Skip chars_to_skip of the decoded characters. */ |
| if (PyUnicode_GetLength(self->decoded_chars) < cookie.chars_to_skip) { |
| PyErr_SetString(PyExc_IOError, "can't restore logical file position"); |
| goto fail; |
| } |
| self->decoded_chars_used = cookie.chars_to_skip; |
| } |
| else { |
| self->snapshot = Py_BuildValue("iy", cookie.dec_flags, ""); |
| if (self->snapshot == NULL) |
| goto fail; |
| } |
| |
| /* Finally, reset the encoder (merely useful for proper BOM handling) */ |
| if (self->encoder) { |
| if (_textiowrapper_encoder_setstate(self, &cookie) < 0) |
| goto fail; |
| } |
| return cookieObj; |
| fail: |
| Py_XDECREF(cookieObj); |
| return NULL; |
| |
| } |
| |
| /*[clinic input] |
| _io.TextIOWrapper.tell |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_tell_impl(textio *self) |
| /*[clinic end generated code: output=4f168c08bf34ad5f input=9a2caf88c24f9ddf]*/ |
| { |
| PyObject *res; |
| PyObject *posobj = NULL; |
| cookie_type cookie = {0,0,0,0,0}; |
| PyObject *next_input; |
| Py_ssize_t chars_to_skip, chars_decoded; |
| Py_ssize_t skip_bytes, skip_back; |
| PyObject *saved_state = NULL; |
| char *input, *input_end; |
| Py_ssize_t dec_buffer_len; |
| int dec_flags; |
| |
| CHECK_ATTACHED(self); |
| CHECK_CLOSED(self); |
| |
| if (!self->seekable) { |
| _unsupported("underlying stream is not seekable"); |
| goto fail; |
| } |
| if (!self->telling) { |
| PyErr_SetString(PyExc_IOError, |
| "telling position disabled by next() call"); |
| goto fail; |
| } |
| |
| if (_textiowrapper_writeflush(self) < 0) |
| return NULL; |
| res = _PyObject_CallMethodId((PyObject *)self, &PyId_flush, NULL); |
| if (res == NULL) |
| goto fail; |
| Py_DECREF(res); |
| |
| posobj = _PyObject_CallMethodId(self->buffer, &PyId_tell, NULL); |
| if (posobj == NULL) |
| goto fail; |
| |
| if (self->decoder == NULL || self->snapshot == NULL) { |
| assert (self->decoded_chars == NULL || PyUnicode_GetLength(self->decoded_chars) == 0); |
| return posobj; |
| } |
| |
| #if defined(HAVE_LARGEFILE_SUPPORT) |
| cookie.start_pos = PyLong_AsLongLong(posobj); |
| #else |
| cookie.start_pos = PyLong_AsLong(posobj); |
| #endif |
| Py_DECREF(posobj); |
| if (PyErr_Occurred()) |
| goto fail; |
| |
| /* Skip backward to the snapshot point (see _read_chunk). */ |
| if (!PyArg_ParseTuple(self->snapshot, "iO", &cookie.dec_flags, &next_input)) |
| goto fail; |
| |
| assert (PyBytes_Check(next_input)); |
| |
| cookie.start_pos -= PyBytes_GET_SIZE(next_input); |
| |
| /* How many decoded characters have been used up since the snapshot? */ |
| if (self->decoded_chars_used == 0) { |
| /* We haven't moved from the snapshot point. */ |
| return textiowrapper_build_cookie(&cookie); |
| } |
| |
| chars_to_skip = self->decoded_chars_used; |
| |
| /* Decoder state will be restored at the end */ |
| saved_state = PyObject_CallMethodObjArgs(self->decoder, |
| _PyIO_str_getstate, NULL); |
| if (saved_state == NULL) |
| goto fail; |
| |
| #define DECODER_GETSTATE() do { \ |
| PyObject *dec_buffer; \ |
| PyObject *_state = PyObject_CallMethodObjArgs(self->decoder, \ |
| _PyIO_str_getstate, NULL); \ |
| if (_state == NULL) \ |
| goto fail; \ |
| if (!PyArg_ParseTuple(_state, "Oi", &dec_buffer, &dec_flags)) { \ |
| Py_DECREF(_state); \ |
| goto fail; \ |
| } \ |
| if (!PyBytes_Check(dec_buffer)) { \ |
| PyErr_Format(PyExc_TypeError, \ |
| "decoder getstate() should have returned a bytes " \ |
| "object, not '%.200s'", \ |
| Py_TYPE(dec_buffer)->tp_name); \ |
| Py_DECREF(_state); \ |
| goto fail; \ |
| } \ |
| dec_buffer_len = PyBytes_GET_SIZE(dec_buffer); \ |
| Py_DECREF(_state); \ |
| } while (0) |
| |
| #define DECODER_DECODE(start, len, res) do { \ |
| PyObject *_decoded = _PyObject_CallMethodId( \ |
| self->decoder, &PyId_decode, "y#", start, len); \ |
| if (check_decoded(_decoded) < 0) \ |
| goto fail; \ |
| res = PyUnicode_GET_LENGTH(_decoded); \ |
| Py_DECREF(_decoded); \ |
| } while (0) |
| |
| /* Fast search for an acceptable start point, close to our |
| current pos */ |
| skip_bytes = (Py_ssize_t) (self->b2cratio * chars_to_skip); |
| skip_back = 1; |
| assert(skip_back <= PyBytes_GET_SIZE(next_input)); |
| input = PyBytes_AS_STRING(next_input); |
| while (skip_bytes > 0) { |
| /* Decode up to temptative start point */ |
| if (_textiowrapper_decoder_setstate(self, &cookie) < 0) |
| goto fail; |
| DECODER_DECODE(input, skip_bytes, chars_decoded); |
| if (chars_decoded <= chars_to_skip) { |
| DECODER_GETSTATE(); |
| if (dec_buffer_len == 0) { |
| /* Before pos and no bytes buffered in decoder => OK */ |
| cookie.dec_flags = dec_flags; |
| chars_to_skip -= chars_decoded; |
| break; |
| } |
| /* Skip back by buffered amount and reset heuristic */ |
| skip_bytes -= dec_buffer_len; |
| skip_back = 1; |
| } |
| else { |
| /* We're too far ahead, skip back a bit */ |
| skip_bytes -= skip_back; |
| skip_back *= 2; |
| } |
| } |
| if (skip_bytes <= 0) { |
| skip_bytes = 0; |
| if (_textiowrapper_decoder_setstate(self, &cookie) < 0) |
| goto fail; |
| } |
| |
| /* Note our initial start point. */ |
| cookie.start_pos += skip_bytes; |
| cookie.chars_to_skip = Py_SAFE_DOWNCAST(chars_to_skip, Py_ssize_t, int); |
| if (chars_to_skip == 0) |
| goto finally; |
| |
| /* We should be close to the desired position. Now feed the decoder one |
| * byte at a time until we reach the `chars_to_skip` target. |
| * As we go, note the nearest "safe start point" before the current |
| * location (a point where the decoder has nothing buffered, so seek() |
| * can safely start from there and advance to this location). |
| */ |
| chars_decoded = 0; |
| input = PyBytes_AS_STRING(next_input); |
| input_end = input + PyBytes_GET_SIZE(next_input); |
| input += skip_bytes; |
| while (input < input_end) { |
| Py_ssize_t n; |
| |
| DECODER_DECODE(input, (Py_ssize_t)1, n); |
| /* We got n chars for 1 byte */ |
| chars_decoded += n; |
| cookie.bytes_to_feed += 1; |
| DECODER_GETSTATE(); |
| |
| if (dec_buffer_len == 0 && chars_decoded <= chars_to_skip) { |
| /* Decoder buffer is empty, so this is a safe start point. */ |
| cookie.start_pos += cookie.bytes_to_feed; |
| chars_to_skip -= chars_decoded; |
| cookie.dec_flags = dec_flags; |
| cookie.bytes_to_feed = 0; |
| chars_decoded = 0; |
| } |
| if (chars_decoded >= chars_to_skip) |
| break; |
| input++; |
| } |
| if (input == input_end) { |
| /* We didn't get enough decoded data; signal EOF to get more. */ |
| PyObject *decoded = _PyObject_CallMethodId( |
| self->decoder, &PyId_decode, "yi", "", /* final = */ 1); |
| if (check_decoded(decoded) < 0) |
| goto fail; |
| chars_decoded += PyUnicode_GET_LENGTH(decoded); |
| Py_DECREF(decoded); |
| cookie.need_eof = 1; |
| |
| if (chars_decoded < chars_to_skip) { |
| PyErr_SetString(PyExc_IOError, |
| "can't reconstruct logical file position"); |
| goto fail; |
| } |
| } |
| |
| finally: |
| res = _PyObject_CallMethodId(self->decoder, &PyId_setstate, "(O)", saved_state); |
| Py_DECREF(saved_state); |
| if (res == NULL) |
| return NULL; |
| Py_DECREF(res); |
| |
| /* The returned cookie corresponds to the last safe start point. */ |
| cookie.chars_to_skip = Py_SAFE_DOWNCAST(chars_to_skip, Py_ssize_t, int); |
| return textiowrapper_build_cookie(&cookie); |
| |
| fail: |
| if (saved_state) { |
| PyObject *type, *value, *traceback; |
| PyErr_Fetch(&type, &value, &traceback); |
| res = _PyObject_CallMethodId(self->decoder, &PyId_setstate, "(O)", saved_state); |
| _PyErr_ChainExceptions(type, value, traceback); |
| Py_DECREF(saved_state); |
| Py_XDECREF(res); |
| } |
| return NULL; |
| } |
| |
| /*[clinic input] |
| _io.TextIOWrapper.truncate |
| pos: object = None |
| / |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_truncate_impl(textio *self, PyObject *pos) |
| /*[clinic end generated code: output=90ec2afb9bb7745f input=56ec8baa65aea377]*/ |
| { |
| PyObject *res; |
| |
| CHECK_ATTACHED(self) |
| |
| res = PyObject_CallMethodObjArgs((PyObject *) self, _PyIO_str_flush, NULL); |
| if (res == NULL) |
| return NULL; |
| Py_DECREF(res); |
| |
| return PyObject_CallMethodObjArgs(self->buffer, _PyIO_str_truncate, pos, NULL); |
| } |
| |
| static PyObject * |
| textiowrapper_repr(textio *self) |
| { |
| PyObject *nameobj, *modeobj, *res, *s; |
| |
| CHECK_INITIALIZED(self); |
| |
| res = PyUnicode_FromString("<_io.TextIOWrapper"); |
| if (res == NULL) |
| return NULL; |
| |
| nameobj = _PyObject_GetAttrId((PyObject *) self, &PyId_name); |
| if (nameobj == NULL) { |
| if (PyErr_ExceptionMatches(PyExc_Exception)) |
| PyErr_Clear(); |
| else |
| goto error; |
| } |
| else { |
| s = PyUnicode_FromFormat(" name=%R", nameobj); |
| Py_DECREF(nameobj); |
| if (s == NULL) |
| goto error; |
| PyUnicode_AppendAndDel(&res, s); |
| if (res == NULL) |
| return NULL; |
| } |
| modeobj = _PyObject_GetAttrId((PyObject *) self, &PyId_mode); |
| if (modeobj == NULL) { |
| if (PyErr_ExceptionMatches(PyExc_Exception)) |
| PyErr_Clear(); |
| else |
| goto error; |
| } |
| else { |
| s = PyUnicode_FromFormat(" mode=%R", modeobj); |
| Py_DECREF(modeobj); |
| if (s == NULL) |
| goto error; |
| PyUnicode_AppendAndDel(&res, s); |
| if (res == NULL) |
| return NULL; |
| } |
| s = PyUnicode_FromFormat("%U encoding=%R>", |
| res, self->encoding); |
| Py_DECREF(res); |
| return s; |
| error: |
| Py_XDECREF(res); |
| return NULL; |
| } |
| |
| |
| /* Inquiries */ |
| |
| /*[clinic input] |
| _io.TextIOWrapper.fileno |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_fileno_impl(textio *self) |
| /*[clinic end generated code: output=21490a4c3da13e6c input=c488ca83d0069f9b]*/ |
| { |
| CHECK_ATTACHED(self); |
| return _PyObject_CallMethodId(self->buffer, &PyId_fileno, NULL); |
| } |
| |
| /*[clinic input] |
| _io.TextIOWrapper.seekable |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_seekable_impl(textio *self) |
| /*[clinic end generated code: output=ab223dbbcffc0f00 input=8b005ca06e1fca13]*/ |
| { |
| CHECK_ATTACHED(self); |
| return _PyObject_CallMethodId(self->buffer, &PyId_seekable, NULL); |
| } |
| |
| /*[clinic input] |
| _io.TextIOWrapper.readable |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_readable_impl(textio *self) |
| /*[clinic end generated code: output=72ff7ba289a8a91b input=0704ea7e01b0d3eb]*/ |
| { |
| CHECK_ATTACHED(self); |
| return _PyObject_CallMethodId(self->buffer, &PyId_readable, NULL); |
| } |
| |
| /*[clinic input] |
| _io.TextIOWrapper.writable |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_writable_impl(textio *self) |
| /*[clinic end generated code: output=a728c71790d03200 input=c41740bc9d8636e8]*/ |
| { |
| CHECK_ATTACHED(self); |
| return _PyObject_CallMethodId(self->buffer, &PyId_writable, NULL); |
| } |
| |
| /*[clinic input] |
| _io.TextIOWrapper.isatty |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_isatty_impl(textio *self) |
| /*[clinic end generated code: output=12be1a35bace882e input=fb68d9f2c99bbfff]*/ |
| { |
| CHECK_ATTACHED(self); |
| return _PyObject_CallMethodId(self->buffer, &PyId_isatty, NULL); |
| } |
| |
| static PyObject * |
| textiowrapper_getstate(textio *self, PyObject *args) |
| { |
| PyErr_Format(PyExc_TypeError, |
| "cannot serialize '%s' object", Py_TYPE(self)->tp_name); |
| return NULL; |
| } |
| |
| /*[clinic input] |
| _io.TextIOWrapper.flush |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_flush_impl(textio *self) |
| /*[clinic end generated code: output=59de9165f9c2e4d2 input=928c60590694ab85]*/ |
| { |
| CHECK_ATTACHED(self); |
| CHECK_CLOSED(self); |
| self->telling = self->seekable; |
| if (_textiowrapper_writeflush(self) < 0) |
| return NULL; |
| return _PyObject_CallMethodId(self->buffer, &PyId_flush, NULL); |
| } |
| |
| /*[clinic input] |
| _io.TextIOWrapper.close |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_TextIOWrapper_close_impl(textio *self) |
| /*[clinic end generated code: output=056ccf8b4876e4f4 input=9c2114315eae1948]*/ |
| { |
| PyObject *res; |
| int r; |
| CHECK_ATTACHED(self); |
| |
| res = textiowrapper_closed_get(self, NULL); |
| if (res == NULL) |
| return NULL; |
| r = PyObject_IsTrue(res); |
| Py_DECREF(res); |
| if (r < 0) |
| return NULL; |
| |
| if (r > 0) { |
| Py_RETURN_NONE; /* stream already closed */ |
| } |
| else { |
| PyObject *exc = NULL, *val, *tb; |
| if (self->finalizing) { |
| res = _PyObject_CallMethodId(self->buffer, &PyId__dealloc_warn, "O", self); |
| if (res) |
| Py_DECREF(res); |
| else |
| PyErr_Clear(); |
| } |
| res = _PyObject_CallMethodId((PyObject *)self, &PyId_flush, NULL); |
| if (res == NULL) |
| PyErr_Fetch(&exc, &val, &tb); |
| else |
| Py_DECREF(res); |
| |
| res = _PyObject_CallMethodId(self->buffer, &PyId_close, NULL); |
| if (exc != NULL) { |
| _PyErr_ChainExceptions(exc, val, tb); |
| Py_CLEAR(res); |
| } |
| return res; |
| } |
| } |
| |
| static PyObject * |
| textiowrapper_iternext(textio *self) |
| { |
| PyObject *line; |
| |
| CHECK_ATTACHED(self); |
| |
| self->telling = 0; |
| if (Py_TYPE(self) == &PyTextIOWrapper_Type) { |
| /* Skip method call overhead for speed */ |
| line = _textiowrapper_readline(self, -1); |
| } |
| else { |
| line = PyObject_CallMethodObjArgs((PyObject *)self, |
| _PyIO_str_readline, NULL); |
| if (line && !PyUnicode_Check(line)) { |
| PyErr_Format(PyExc_IOError, |
| "readline() should have returned an str object, " |
| "not '%.200s'", Py_TYPE(line)->tp_name); |
| Py_DECREF(line); |
| return NULL; |
| } |
| } |
| |
| if (line == NULL || PyUnicode_READY(line) == -1) |
| return NULL; |
| |
| if (PyUnicode_GET_LENGTH(line) == 0) { |
| /* Reached EOF or would have blocked */ |
| Py_DECREF(line); |
| Py_CLEAR(self->snapshot); |
| self->telling = self->seekable; |
| return NULL; |
| } |
| |
| return line; |
| } |
| |
| static PyObject * |
| textiowrapper_name_get(textio *self, void *context) |
| { |
| CHECK_ATTACHED(self); |
| return _PyObject_GetAttrId(self->buffer, &PyId_name); |
| } |
| |
| static PyObject * |
| textiowrapper_closed_get(textio *self, void *context) |
| { |
| CHECK_ATTACHED(self); |
| return PyObject_GetAttr(self->buffer, _PyIO_str_closed); |
| } |
| |
| static PyObject * |
| textiowrapper_newlines_get(textio *self, void *context) |
| { |
| PyObject *res; |
| CHECK_ATTACHED(self); |
| if (self->decoder == NULL) |
| Py_RETURN_NONE; |
| res = PyObject_GetAttr(self->decoder, _PyIO_str_newlines); |
| if (res == NULL) { |
| if (PyErr_ExceptionMatches(PyExc_AttributeError)) { |
| PyErr_Clear(); |
| Py_RETURN_NONE; |
| } |
| else { |
| return NULL; |
| } |
| } |
| return res; |
| } |
| |
| static PyObject * |
| textiowrapper_errors_get(textio *self, void *context) |
| { |
| CHECK_INITIALIZED(self); |
| return PyUnicode_FromString(PyBytes_AS_STRING(self->errors)); |
| } |
| |
| static PyObject * |
| textiowrapper_chunk_size_get(textio *self, void *context) |
| { |
| CHECK_ATTACHED(self); |
| return PyLong_FromSsize_t(self->chunk_size); |
| } |
| |
| static int |
| textiowrapper_chunk_size_set(textio *self, PyObject *arg, void *context) |
| { |
| Py_ssize_t n; |
| CHECK_ATTACHED_INT(self); |
| n = PyNumber_AsSsize_t(arg, PyExc_ValueError); |
| if (n == -1 && PyErr_Occurred()) |
| return -1; |
| if (n <= 0) { |
| PyErr_SetString(PyExc_ValueError, |
| "a strictly positive integer is required"); |
| return -1; |
| } |
| self->chunk_size = n; |
| return 0; |
| } |
| |
| #include "clinic/textio.c.h" |
| |
| static PyMethodDef incrementalnewlinedecoder_methods[] = { |
| _IO_INCREMENTALNEWLINEDECODER_DECODE_METHODDEF |
| _IO_INCREMENTALNEWLINEDECODER_GETSTATE_METHODDEF |
| _IO_INCREMENTALNEWLINEDECODER_SETSTATE_METHODDEF |
| _IO_INCREMENTALNEWLINEDECODER_RESET_METHODDEF |
| {NULL} |
| }; |
| |
| static PyGetSetDef incrementalnewlinedecoder_getset[] = { |
| {"newlines", (getter)incrementalnewlinedecoder_newlines_get, NULL, NULL}, |
| {NULL} |
| }; |
| |
| PyTypeObject PyIncrementalNewlineDecoder_Type = { |
| PyVarObject_HEAD_INIT(NULL, 0) |
| "_io.IncrementalNewlineDecoder", /*tp_name*/ |
| sizeof(nldecoder_object), /*tp_basicsize*/ |
| 0, /*tp_itemsize*/ |
| (destructor)incrementalnewlinedecoder_dealloc, /*tp_dealloc*/ |
| 0, /*tp_print*/ |
| 0, /*tp_getattr*/ |
| 0, /*tp_setattr*/ |
| 0, /*tp_compare */ |
| 0, /*tp_repr*/ |
| 0, /*tp_as_number*/ |
| 0, /*tp_as_sequence*/ |
| 0, /*tp_as_mapping*/ |
| 0, /*tp_hash */ |
| 0, /*tp_call*/ |
| 0, /*tp_str*/ |
| 0, /*tp_getattro*/ |
| 0, /*tp_setattro*/ |
| 0, /*tp_as_buffer*/ |
| Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ |
| _io_IncrementalNewlineDecoder___init____doc__, /* tp_doc */ |
| 0, /* tp_traverse */ |
| 0, /* tp_clear */ |
| 0, /* tp_richcompare */ |
| 0, /*tp_weaklistoffset*/ |
| 0, /* tp_iter */ |
| 0, /* tp_iternext */ |
| incrementalnewlinedecoder_methods, /* tp_methods */ |
| 0, /* tp_members */ |
| incrementalnewlinedecoder_getset, /* tp_getset */ |
| 0, /* tp_base */ |
| 0, /* tp_dict */ |
| 0, /* tp_descr_get */ |
| 0, /* tp_descr_set */ |
| 0, /* tp_dictoffset */ |
| _io_IncrementalNewlineDecoder___init__, /* tp_init */ |
| 0, /* tp_alloc */ |
| PyType_GenericNew, /* tp_new */ |
| }; |
| |
| |
| static PyMethodDef textiowrapper_methods[] = { |
| _IO_TEXTIOWRAPPER_DETACH_METHODDEF |
| _IO_TEXTIOWRAPPER_WRITE_METHODDEF |
| _IO_TEXTIOWRAPPER_READ_METHODDEF |
| _IO_TEXTIOWRAPPER_READLINE_METHODDEF |
| _IO_TEXTIOWRAPPER_FLUSH_METHODDEF |
| _IO_TEXTIOWRAPPER_CLOSE_METHODDEF |
| |
| _IO_TEXTIOWRAPPER_FILENO_METHODDEF |
| _IO_TEXTIOWRAPPER_SEEKABLE_METHODDEF |
| _IO_TEXTIOWRAPPER_READABLE_METHODDEF |
| _IO_TEXTIOWRAPPER_WRITABLE_METHODDEF |
| _IO_TEXTIOWRAPPER_ISATTY_METHODDEF |
| {"__getstate__", (PyCFunction)textiowrapper_getstate, METH_NOARGS}, |
| |
| _IO_TEXTIOWRAPPER_SEEK_METHODDEF |
| _IO_TEXTIOWRAPPER_TELL_METHODDEF |
| _IO_TEXTIOWRAPPER_TRUNCATE_METHODDEF |
| {NULL, NULL} |
| }; |
| |
| static PyMemberDef textiowrapper_members[] = { |
| {"encoding", T_OBJECT, offsetof(textio, encoding), READONLY}, |
| {"buffer", T_OBJECT, offsetof(textio, buffer), READONLY}, |
| {"line_buffering", T_BOOL, offsetof(textio, line_buffering), READONLY}, |
| {"_finalizing", T_BOOL, offsetof(textio, finalizing), 0}, |
| {NULL} |
| }; |
| |
| static PyGetSetDef textiowrapper_getset[] = { |
| {"name", (getter)textiowrapper_name_get, NULL, NULL}, |
| {"closed", (getter)textiowrapper_closed_get, NULL, NULL}, |
| /* {"mode", (getter)TextIOWrapper_mode_get, NULL, NULL}, |
| */ |
| {"newlines", (getter)textiowrapper_newlines_get, NULL, NULL}, |
| {"errors", (getter)textiowrapper_errors_get, NULL, NULL}, |
| {"_CHUNK_SIZE", (getter)textiowrapper_chunk_size_get, |
| (setter)textiowrapper_chunk_size_set, NULL}, |
| {NULL} |
| }; |
| |
| PyTypeObject PyTextIOWrapper_Type = { |
| PyVarObject_HEAD_INIT(NULL, 0) |
| "_io.TextIOWrapper", /*tp_name*/ |
| sizeof(textio), /*tp_basicsize*/ |
| 0, /*tp_itemsize*/ |
| (destructor)textiowrapper_dealloc, /*tp_dealloc*/ |
| 0, /*tp_print*/ |
| 0, /*tp_getattr*/ |
| 0, /*tps_etattr*/ |
| 0, /*tp_compare */ |
| (reprfunc)textiowrapper_repr,/*tp_repr*/ |
| 0, /*tp_as_number*/ |
| 0, /*tp_as_sequence*/ |
| 0, /*tp_as_mapping*/ |
| 0, /*tp_hash */ |
| 0, /*tp_call*/ |
| 0, /*tp_str*/ |
| 0, /*tp_getattro*/ |
| 0, /*tp_setattro*/ |
| 0, /*tp_as_buffer*/ |
| Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
| | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_HAVE_FINALIZE, /*tp_flags*/ |
| _io_TextIOWrapper___init____doc__, /* tp_doc */ |
| (traverseproc)textiowrapper_traverse, /* tp_traverse */ |
| (inquiry)textiowrapper_clear, /* tp_clear */ |
| 0, /* tp_richcompare */ |
| offsetof(textio, weakreflist), /*tp_weaklistoffset*/ |
| 0, /* tp_iter */ |
| (iternextfunc)textiowrapper_iternext, /* tp_iternext */ |
| textiowrapper_methods, /* tp_methods */ |
| textiowrapper_members, /* tp_members */ |
| textiowrapper_getset, /* tp_getset */ |
| 0, /* tp_base */ |
| 0, /* tp_dict */ |
| 0, /* tp_descr_get */ |
| 0, /* tp_descr_set */ |
| offsetof(textio, dict), /*tp_dictoffset*/ |
| _io_TextIOWrapper___init__, /* tp_init */ |
| 0, /* tp_alloc */ |
| PyType_GenericNew, /* tp_new */ |
| 0, /* tp_free */ |
| 0, /* tp_is_gc */ |
| 0, /* tp_bases */ |
| 0, /* tp_mro */ |
| 0, /* tp_cache */ |
| 0, /* tp_subclasses */ |
| 0, /* tp_weaklist */ |
| 0, /* tp_del */ |
| 0, /* tp_version_tag */ |
| 0, /* tp_finalize */ |
| }; |